【Universal Socket】The Universal Socket Tool instantly adjusts to grip hex nuts, hooks and lag screws, bolt heads, and other various shape and size objects. 【Versatile Tool】The Universal Socket fits both standard 1/4’’ to 3/4’’ and metric 7 to 19 mm nuts and bolts. 【Power Drill Adapter】Can be attached with Socket Wrench, Power Drill and Ratchet Driver with the 3/8’’ Drill Adapter. 【Professional Quality】Stainless Steel construction with 54 individual hardened steel spring pins that retract to the shape of most objects. This durable and Universal Socket Wrench Set can be applied automotive industry, maintenance, manufacturing industry, construction and other industries.