• Three most popular flip impact sockets, each featuring 2 sizes in one tool • Drop forged chrome molybdenum steel for strength and durability • For use with 1/2 inch drive extended anvil shank impact tools or included 1/2 inch drive x 3 inch extension • Thinner walls provide better access in tight areas • Sizes: 17, 19 & 21 mm, 3/4, 13/16 & 7/8in. • Rounded corners for a tighter grip • Storage / carrying case
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