Torx driver bits are heat treated alloy steel, tamper resistant (security type) design.Torx bits are 1/4" hex drive, and the set includes 1/4" drive adapter for ratchet applicationsTorx bit sizes: T5, T6, T7, T8, T9, T10, and T15.You will not be disappointed with Tamper Proof Security Bits 8pc Set T5 T6 T7 T8 T9 T10 T15 Torx
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