20 Pcs Spline Tip Bit Socket & XZN Triple Square Spline Bit Socket Set M4-M18

1/2"Dr: M16 (tamper proof), M18 (tamper proof). 1/4"Dr: M4, M5, M6; 3/8"Dr: M8, M9, M10, M12, M14 (tamper proof). The Bits made of premium S2 alloy steel for superior hardness and insure longevity,Cr-V steel sockets provide superior torque for greater turning power.

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