13 pc Tamper Resistant Hex Bit Set S2 alloy steel bits for strength and durability For use with pin type tamper resistant hex fasteners 1″ and 3″ drive bit holders 11 bits, 1.5mm, 2, 2.5, 3, 4, 5, 5.5, 6, 7, 8 and 10mm Handy magnetic holder sticks to most metal surfaces
