Description: * brand new and high quality. *Made of high quality material, durable and practical to use *Each Bit is about 25mm Long and The Bottom Diameter is about 6.35mm Specification: Product Name: 33PCS Screwdriver Bit Combination Set Optional Types: Hollow / Solid Material: Chrome Vanadium Steel Extension Shank Length: 60mm(Approx.) Connector Diameter: 6.35mm(Approx.) Weight(Approx.): Hollow Set 211g, Solid Set 214g (the specifications of each bit are slightly different, the actual product is subject to receipt) Rotary Head Type: Hex Whether Insulation: Yes Whether Magnetic: Yes System: Metric Quantity:33pcs Package Contents: 3*3-Claws, 3*4-Claws, 4*1-Word Open, 10*Plum Holes (T10, T15, T20, 2 * T25, T27, 2 * T30, T35, T40) 12*Hexagonal Punch (2, 2.5, 3, 4, 5, 6, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32) 1*Hexagonal Extension Shank. Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight manual measurement deviation for the data.