Features: Brand new and high quality The edges does not collapse or break, and the head of high hardness reinforced alloy steel is not easy to break. High fit, non-slip, and tight with the screw. Continuous nailings does not hurt the batch head, and it is wear-resistant and durable. Not easy to rust, strong magnetic force and firm adsorption. Head antislip design, complete specifications. Exquisite waist design, strong impact resistance: the waist buffer absorbs strong impact. High-precisions batch, straight and concentrics, effectively reducing the phenomenon of slippage. Specifications: Material:Alloy Steel Type:65mm/100mm/65mm+100mm Package Includes: 10Pcs Screwdriver Bit note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.