Name : 14 sets of solid sleeves. Material: chrome vanadium steel Size: total length 38 mm shank length 20 mm Shank diameter: 1\/4 hex shank 1\/4 hex quick release shank Weight: 14 pieces --- 225 g. Packing size: 90*80*20mm Specifications: 3\/16, 1\/4, 9\/32, 5\/16, 11\/32, 3\/8, 7\/16 5mm, 5.5mm, 6mm, 7mm, 8mm, 10mm, 12mm Quantity delivered: 1 Set of 14 Pieces Color: Silver 14 Pcs Nut Tools Metric Drill Bits Driver Socket Wrench 5mm-12mm Hex Drill Bits, Fits Most Corded or Cordless Powered Drills , strong interior hexagon sleeves. This nut free magnetic tools. Wrench bit power (inch): 3\/16inch, 1\/4inch, 9\/32, 5\/16inch, 11\/32inch, 3\/8inch, 7\/16inch; Powerful Nut Driver Bits (Metric): 5mm, 5.5mm, 6mm, 7mm, 8mm, 10mm, 12mm. Heat treated chrome vanadium steel, rustproof, non-slip, flexible. Rustproof, non-slip, flexible. Mounted on a black clip, easy to use and storage. Applicable for installation in these parts, tools such as pneumatic screwdriver, electric screwdriver, pneumatic drill, electric drill, drill gun, manual screwdriver, etc. It's widely used in household DIY, auto parts, woodworking, professional machine repairing, etc.