Features These 1 inch drive impact socket extensions come with a one-inch square drive that’s compatible with impact power wrenches having the same drive size. Material / Alloy Steel Finish / Black Oxide Overall Length / 7 3/8 in Input Drive Size / 1 in Output Drive Size / 1 in Input Drive Gender / Female Input Drive Shape / Square Output Drive Gender / Male Output Drive Shape / Square Drive Type / Impact Impact Rated / Yes Insulated / No Locking / Yes Non-Sparking / No Measurement Type / SAE Standards / ASME B107.110-2012 Socket Extension Type / Standard