VIM Tools T45 Half Cut Security Driver Bit, Tamper Proof, 3/8 in. Square Driver, 1-1/8 in. OAL

Half cut TORX, TORX length cut to 1/2 the normal depth, increasing strength and improving fastener engagement Due to shortened TORX length, these standard TORX drivers also drive TORX plus S2 steel, the strongest and hardest drivers available Heat treated to 58-62 RC Satin chrome plated