Features 1、The 7-piece set has various specifications and is widely applicable. 2、Forged with CR-MO chromium molybdenum steel, high hardness and good toughness, durable. 3、Precision fine-tooth thread, improve working efficiency, used for machine repair, auto repair, decoration of water pipes, etc. 4、Equipped with 1/2 inch square head (12.5mm), suitable for pneumatic / electric / manual wrench. 5、Used to remove broken or damaged screws and nuts, and can also be used directly with 1/2in ratchet wrench. 6、Surface anti-rust and anti-corrosion treatment, not easy to rust, more practical and beautiful. Specification Condition: 100% Brand New Item Type: Damaged Thread Extractor Material: Chrome-Molybdenum Steel Color: As Pictures Shown Square Head Size: Approx. 1/2in (12.5mm) Length: Approx. 78mm/ 3.1in Specification: 1 x 1mm, 1 x 2mm, 1 x 3mm, 1 x 4mm, 1 x 5mm, 1 x 6mm, 1 x 7mm Application: Equipped with 1/2 inch square head (12.5mm), suitable for pneumatic / electric / manual wrench Used to remove broken or damaged screws and nuts, and can also be used directly with 1/2in ratchet wrench. Package List 7 x Damaged Thread Extractor Kit