5pc-pack S2 Steel 6.25mmx25mmL Hex Allen Tamperproof (Center Hole) Bit:H1.5-H6mm

Security tamperproof with center hole. Manufactured from hard-wearing S2 steel, these bits provide a long working life. Hex allen bits. 25mm length 1/4" 6.25mm shank to fit most of bits drive tools.