Evolution-inducing held item

Ash's Gligar reaches for the Razor Fang Ash tossed.

An evolution-inducing held item is an item which makes the Pokémon holding it evolve when a certain event happens, such as if the Pokémon is traded or leveled up. The item disappears once the Pokémon has evolved. For evolution-inducing items that are not meant to be held, see the page on evolutionary stones.

List of evolution-inducing held items

DeepSeaScale しんかいのウロコ Deep Sea Scale   ITEMS pocket					INTRODUCED IN GEN III		Cannot be bought Sell for: 100
Effect: Raises Clamperl's Special Defense.					Locations RSE Gift from Captain Stern after finding the Scanner on the Abandoned Ship DPPt Wild Chinchou, wild Lanturn, wild Relicanth HGSS Wild Chinchou, wild Lanturn, wild Relicanth PBR 14400 Poké Coupons
Secondary effect: Causes Clamperl to evolve into Gorebyss when traded.
Description RSE  ??? FRLG  ??? DPPt An item to be held by Clamperl. A scale that shines a faint pink, it raises the Sp. Def stat.

DeepSeaTooth しんかいのキバ Deep Sea Fang   ITEMS pocket					INTRODUCED IN GEN III		Cannot be bought Sell for: 100
Effect: Raises Clamperl's Special Attack.					Locations RSE Gift from Captain Stern after finding the Scanner on the Abandoned Ship DPPt Wild Carvanha, wild Sharpedo HGSS Wild Carvanha, wild Sharpedo PBR 14400 Poké Coupons
Secondary effect: Causes Clamperl to evolve into Huntail when traded.
Description RSE  ??? FRLG  ??? DPPt An item to be held by Clamperl. A fang that gleams a sharp silver, it raises the Sp. Atk stat.

Dragon Scale りゅうのウロコ Dragon's Scale   ITEMS pocket					INTRODUCED IN GEN II		Cannot be bought Sell for: 1050
Effect: Causes Seadra to evolve into Kingdra when traded.					Locations GSC Mt. Mortar RSE Wild Horsea, wild Bagon FRLG Water Path, Trainer Tower prize, wild Horsea DPPt Wild Horsea, wild Seadra, wild Dratini, wild Dragonair, wild Bagon HGSS Mt. Mortar, wild Horsea, wild Seadra, wild Dratini, wild Dragonair
Description RSE  ??? FRLG  ??? DPPt A thick and tough scale. Dragon-type Pokémon may be holding this item when caught.

Dubious Disc あやしいパッチ Suspicious Patch   ITEMS pocket					INTRODUCED IN GEN IV		Cannot be bought Sell for: 1050
Effect: Causes Porygon2 to evolve into Porygon-Z when traded.					Locations DPPt Route 225, Team Galactic HQPt HGSS Route 42 (requires Rock Climb) PBR 12000 Poké Coupons
Description DPPt A transparent device overflowing with dubious data. Its producer is unknown.

Electirizer エレキブースター Elekibooster   ITEMS pocket					INTRODUCED IN GEN IV		Cannot be bought Sell for: 1050
Effect: Causes Electabuzz to evolve into Electivire when traded.					Locations DPPt Wild Elekid, wild Electabuzz, Valley WindworksPt (requires Surf) HGSS Cerulean Cave
Description DPPt A box packed with a tremendous amount of electric energy. It is loved by a certain Pokémon.

King's Rock おうじゃのしるし King's Symbol   ITEMS pocket					INTRODUCED IN GEN II		Cannot be bought Sell for: 50
Effect: Occasionally causes targets of the Pokémon's moves to flinch.					Locations GSC Slowpoke Well, wild Slowpoke RSE Mossdeep City, wild Hariyama, Pickup FRLG Sevault Canyon, Trainer Tower prize, wild Slowpoke DPPt wild Poliwhirl, Pickup, Celestic TownPt HGSS Slowpoke Well, wild Slowpoke
Secondary effect: Causes Poliwhirl to evolve into Politoed when traded. Causes Slowpoke to evolve into Slowking when traded.
Description GSC  ??? RSE  ??? FRLG  ??? DPPt An item to be held by a Pokémon. It may cause the foe to flinch when the holder inflicts damage.

Magmarizer マグマブースター Magmabooster   ITEMS pocket					INTRODUCED IN GEN IV		Cannot be bought Sell for: 1050
Effect: Causes Magmar to evolve into Magmortar when traded.					Locations DPPt Wild Magby, wild Magmar, Route 214Pt HGSS Cinnabar Island
Description DPPt A box packed with a tremendous amount of magma energy. It is loved by a certain Pokémon.

Metal Coat メタルコート Metal Coat   ITEMS pocket					INTRODUCED IN GEN II		Cannot be bought Sell for: 50
Effect: Boosts the power of Steel-type moves by 20% when held.					Locations GSC S.S. Aqua, wild Magnemite RSE New Mauville, wild Magnemite, wild Magneton FRLG Memorial Pillar, Trainer Tower prize DPPt Iron Island (from Byron), wild Magnemite, wild Steelix, wild Beldum, wild Bronzor, wild Bronzong HGSS S.S. Aqua, wild Magnemite
Secondary effect: Causes Onix to evolve into Steelix when traded. Causes Scyther to evolve into Scizor when traded.
Description GSC  ??? RSE  ??? FRLG  ??? DPPt An item to be held by a Pokémon. It is a special metallic film that ups the power of Steel-type moves.

Oval Stone まんまるいし Round Stone   ITEMS pocket					INTRODUCED IN GEN IV		Cannot be bought Sell for: 1050
Effect: If held, causes Happiny to evolve into Chansey when leveled up during the day.					Locations DPPt The Underground, wild Happiny, wild Chansey HGSS wild Chansey
Description DPPt A peculiar stone that makes certain species of Pokémon evolve. It is shaped like an egg.

Protector プロテクター Protector   ITEMS pocket					INTRODUCED IN GEN IV		Cannot be bought Sell for: 1050
Effect: Causes Rhydon to evolve into Rhyperior when traded.					Locations DPPt Route 228, Iron IslandPt HGSS Mt. Mortar PBR 12000 Poké Coupons
Description DPPt A protective item of some sort. It is extremely stiff and heavy. It is loved by a certain Pokémon.

Razor Claw するどいツメ Sharp Claw   ITEMS pocket					INTRODUCED IN GEN IV		Cannot be bought Sell for: 1050
Effect: Raises the critical hit ratio of the holder.					Locations DPPt Route 224, Victory Road, Battle Tower/Frontier, Team Galactic HQ (hidden in Cyrus's room)Pt HGSS Battle Frontier
Secondary effect: If held, causes Sneasel to evolve into Weavile when leveled up during the night.
Description DPPt An item to be held by a Pokémon. It is a sharply hooked claw that ups the holder's critical-hit ratio.

Razor Fang するどいキバ Sharp Fang   ITEMS pocket					INTRODUCED IN GEN IV		Cannot be bought Sell for: 1050
Effect: Occasionally causes targets of the Pokémon's moves to flinch.					Locations DPPt Battle Tower/Frontier, Battle ParkDP, Route 214 (hidden in grass patch)Pt HGSS Battle Frontier
Secondary effect: If held, causes Gligar to evolve into Gliscor when leveled up during the night.
Description DPPt An item to be held by a Pokémon. It may cause the foe to flinch when the holder inflicts damage.

Reaper Cloth れいかいのぬの Spirit World Cloth   ITEMS pocket					INTRODUCED IN GEN IV		Cannot be bought Sell for: 1050
Effect: If held, causes Dusclops to evolve into Dusknoir when traded.					Locations DPPt Route 229, Turnback Cave, Acuity LakefrontPt HGSS Silver Cave, wild Duskull found at Champ Road PBR 12000 Poké Coupons
Description DPPt A cloth imbued with horrifyingly strong spiritual energy. It is loved by a certain Pokémon.

Up-Grade アップグレード Upgrade   ITEMS pocket					INTRODUCED IN GEN II		Cannot be bought Sell for: 1050
Effect: If held, causes Porygon to evolve into Porygon2 when traded.					Locations GSC Silph Co. FRLG Rocket Warehouse, Trainer Tower prize DPPt Eterna City, Route 224Pt, Galactic Eterna BuildingPt HGSS Silph Co. PBR 9600 Poké Coupons
Description GSC  ??? RSE  ??? FRLG  ??? DPPt A transparent device filled with all sorts of data. It was produced by Silph Co.

This item article is part of Project ItemDex, a Bulbapedia project that aims to write comprehensive articles on all items.