12pcs T6-T40 Security Torx Bit 1/4" Hex Shank 3" Long Tamper Resistant Star Bits blackfriady Head Diameter: 30mm / 1

Head Diameter: 30mm  / 1

Net Weight:68g

tapping wood and soft metals with lower hardness

cable and wire assembly

[Extremely Versatile]The Countersink Drill Bit Set is includes 1 piece of hex key and 7 pieces of countersink drill bit in 7 different sizes to satisfy all you demand

12pcs T6-T40 Security Torx Bit 1/4" Hex Shank 3" Long Tamper Resistant Star Bits blackfriady Head Diameter: 30mm / 11. The tamper resistant star bit is made of heat treated S2 steel, hardness up to HRC58 60, with high strength and wear resistance, anti bending, anti breaking, not easy to deform, and durable. 2. The tamper proof Torx drill bit adopts a magnetism design and can absorb screws vertically or tilted. The head is a hexagonal plum blossom shape with a hole, which can make close contact with the screw, making disassembly and installation more stable and