The product is made of high quality steel, with galvanized surface, high hardness and wear resistance. The 14-piece magnetic socket kit includes specifications from 6mm to 19mm to meet different operating needs. Hexagonal magnetic inserts hold the drill in place for faster setup. Suitable for most electric drills, screwdrivers, rechargeable magnetic screwdrivers, sandblasted chrome vanadium steel bits, quick release hex handles, saving you time. Specifications: Material: tool steel Surface treatment: Galvanized Quantity: 14 pieces Socket Specifications: 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm Packing List: 1 magnetic socket set of 14 pieces