COSTS MATERIALS The LLNDEI 1/4 、 3/8 、 1/2-inch effect outlet collection is built from heat-treated chrome vanadium steel(50BV30) and has a corrosion-resistant black phosphate covering for improved longevity, not very easy to corrosion or corrode. 6 POINT DESIGN & DEEP SHALLOW DESIGN LLNDEI outlet collection includes a 6-point style that properly disperses pressure to the level sides of bolts, protecting against round-off. SOLUTION GUARANTEE The LLNDEI Professional Impact Socket Set surpasses or satisfies ANSI and DIN efficiency criteria.
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