SK 89040 20 Piece 3/8-Inch Drive 6 Point 5/16-Inch to 7/8-Inch Standard Deep and Extra Long Deep Socket Set 20-piece 3/8-inch drive 6-point standard, deep and extra long deep fractional socket set stands up to harsh working environments Patented SuperKrome finish for durability and maximum corrosion resistance SureGrip hex design drives the side of the fastener, not the corner Includes 10 standard sockets, 5 extra long deep sockets, and 5 deep sockets Full lifetime warranty