Product name: screwdriver accessories Material: crv chromium vanadium steel Weight: about 50g Size: 6.35 interface front end 5mm Specifications: 1.High quality screwdriver set: Each screwdriver head set in this set is made of durable crv chrome vanadium steel, which can reduce wear and ensure service life. This drill kit contains unusual drill bits that loosen tamper resistant drills that cannot be unscrewed with a regular screwdriver. 2.General purpose tamper resistant drill bit kit: This general purpose drill bit driver kit includes 5 unique drill bit ends. 3.Precision machining drill: This drill set has been carefully manufactured and precision processed, with accurate dimensions. The beveled end of the drill bit is smoothly inserted into the fastener and protects the drill bit and fastener from damaged edges. 4.These drill bits are very suitable for use with electronic equipment. Use this drill bit where additional safety is required. 5. Overload security bits: Our security bit set can be used for many projects. When additional safety measures are required, use a drill to secure the corresponding screws to wood, metal, or any material. Complete the work with confidence and speed! Package Included: 5 * screwdriver head