Torque Tune Gear

Level 1 LIGHT/Machine Tuner Effect
0 ATK / 0 DEF

Once per turn, you can either: Target 1 monster you control; equip this card to that target, OR: Unequip this card and Special Summon it. A monster equipped with this card is treated as a Tuner, it gains 500 ATK/DEF, also if the equipped monster would be destroyed by battle or card effect, destroy this card instead.

Rulings – Yugipedia

Printings:

Invasion: Vengeance: INOV-EN033 (Super Rare) - 2016-11-03
Structure Deck: Mechanized Madness: SR10-EN018 (Common) - 2020-04-16

Prices:

Cardmarket: 0.07 €
TCGplayer: $ 0.14