Features: High hardness impact hex head wrench drill bits. 1/4” quick release hex, 2.36'' long. Torsion zones to absorb torquepeaks avoid breakage. CNCmachined tips, alloy steel body, hardened to increase bit strength and reduce fracture. Manganese Phosphate surfaces to prevent rust. Strengthened magnetic impact bit helps pick up screws easily. The magnetism doesn’t decay after multiple uses. For heavy screw driving. Metric 10pcs 1.5mm, 2.0mm, 2.5mm, 3mm, 4mm, 5mm, 5.5mm, 6mm, 8mm, 10mm, 12mm；English 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16 60mm black quick release rod. Specifications: Name: Hexagonal Screwdriver Head Material: Hardened Steel Length: approx 60mm/2.36in Weight: 344g Packaging: Plastic bags Product specifications: metric 1.5mm, 2.0mm 2.5mm 3mm, 4mm, 5mm, 5.5mm, 6mm, 8mm, 10mm, 12mm English 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16 60mm black quick release rod Package Includes: 1Set 23PCS Impact Driver Hex Bits note: Due to the problems of lighting effectsand shooting angle, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment.