Features These 1-inch drive impact socket adapters come with a one-inch square drive that’s compatible with drive tools of the same size. Finish / Black Oxide Locking / No Output Drive / Male, Square, 1 1/2 in Output Drive Shape / Square Output Drive Size / 1 1/2 in Output Drive Gender / Male Drive Type / Impact Input Drive / Female, Square, 1 in Input Drive Shape / Square Input Drive Size / 1 in Input Drive Gender / Female Insulated / No Non-Sparking / No Number of Pieces / 1 Overall Length / 3 1/2 in Standards / ASME B107.110-2012 Impact Rated / Yes Material / Alloy Steel Measurement Type / SAE