... quality alloy steel S2 and CRV material and come up to the International quality standard DIN-ISO. Screwdriver bitMaterial ... plus,Overall length: 25mm,50mm, 65mm, etc.Type: single head, double head, head with round neck, skidproof screwdriver bitPacking: Skin ... pack, double blister, single blister, injection case, blow case, PVC bag, colorbox. ...