High Quality Phillips Screwdriver bit

High Quality Phillips Screwdriver bit 1. Precision machining, precision fit. 2. It is suitable for all standard bit holders and electric tools. 3. The service life of reinforced bit is longer than that of standard bit. Rib cutter head can bear up to 50% torque before gluing. 4. Chrome vanadium molybdenum tool steel or industrial grade S2 tool steel is tempered to super hard to improve durability. 5. Heat resistant treatment to prevent fracture and wear. Specifically designed to reduce stripping. Size: 6.35 * 25 / 50mm HRC：60 + -1HRC Surface treatment: mirror, bronze, matte, phosphor black, customized Head: pH, SL, tox, SQ, PZ Function: tighten or loosen screws Retail packaging: PVC box / blister card / horn patent box / customizable Quality control: 100% inspection from production to production After sales service: if there are quality defects, free replacement. Payment method: T / T, L / C, PayPal, DP Sample: Free Minimum order quantity: 6000pcs  …