【Professional Tungsten Carbide Material】Made from wear-resistant tungsten carbide for strong cutting power and long-lasting durability, ideal for micro stripped screws in precision electronics. 【Dual-Head Extraction System】Includes a twist drill bit and multi-tooth grinding head for a two-step process: drilling through damaged screws and extracting them efficiently. 【Precision Brass Chuck】Brass micro-precision chuck with side hex socket screw securely locks micro drill bits to prevent slipping during operation. 【Non-Destructive Screw Removal】Designed for narrow areas such as phone charging ports, helping remove stripped screws without damaging device housings or connectors. 【Portable & Professional Use】Comes with a compact storage case for easy carrying and enables quick removal of stripped or damaged screws from smartphones and electronics. Specifications: Material: Tungsten Carbide (Drill Bits), Brass (Chuck) Model: SD90 Kit Contents: 2 Drill Bits + 1 Chuck Drill Bit Types: Spiral Groove Drill Bit, Multi-Tooth Grinding Head Chuck Features: Knurled Adjustment Ring, Side Fixing Screw Hole Application: Micro Precision Work, Phone Repair Compatibility: Electric Drill, Electric Screwdriver Package included 1 x 2UUL SD90 Phone Stripped Screw Removal Tungsten Steel Drill Bit Set Specifications Brand 2UUL Color As Shown Gross Weight 0.024kg Volume Weight 0.008kg Package Length 5.400cm Package Width 3.200cm Package Height 2.000cm