Features 1、【Premium /u0026 High quality】Stripped bolt nut remover processed from high hardness chrome-vanadium steel, reverse spiral flutes are designed to bite down to provide maximum gripping power. 2、【Various Sizes in One Set】5 pieces 1/2 inch drive bolt /u0026 nut remover kit comes with easily readable marks: 17mm, 19mm, 21mm, 22mm, 12mm. 3、【Universal Design】Standard 1/2 inch square drive for use with hand ratchets, impact wrenches and air ratchets. 4、【Safe Storage】The entire set is packed in a storage box for easy storage. You can take it to any corner of the world, whether it is in your garage or home. 5、【Wide Application】The special internal thread design are precision engineered to easily extract damaged bolts, lug nuts and screws in home appliance, vehicle repair and industrial instrument, even if they are stripped, rusted or frozen. Specification Features: 【Premium & High quality】Stripped bolt nut remover processed from high hardness chrome-vanadium steel, reverse spiral flutes are designed to bite down to provide maximum gripping power. 【Various Sizes in One Set】5 pieces 1/2 inch drive bolt & nut remover kit comes with easily readable marks: 17mm, 19mm, 21mm, 22mm, 12mm. 【Universal Design】Standard 1/2 inch square drive for use with hand ratchets, impact wrenches and air ratchets. 【Safe Storage】The entire set is packed in a storage box for easy storage. You can take it to any corner of the world, whether it is in your garage or home. 【Wide Application】The special internal thread design are precision engineered to easily extract damaged bolts, lug nuts and screws in home appliance, vehicle repair and industrial instrument, even if they are stripped, rusted or frozen. Specifications: Material: Chrome-vanadium steel Quantity: 5 Pcs Sockets Size: 17mm, 19mm, 21mm, 22mm Iron Bar Size: 12 x 70mm Package Weight: 800g / 1.76lb Package Size: 16.5 * 12 * 5cm / 6.49 * 4.72 * 1.97in Package List: 4 * Socket 1 * Iron Bar 1 * Storage Case Package List 4 * Socket 1 * Iron Bar 1 * Storage Case