XTP™ PVC Steel Toe Knee Boots, 15 in H, Size 11, Black Gray Yellow no checkout corrosion prevention oils corrosion prevention oils Tight tolerances for snug fit on fastener Used wherever powered drive tools are used to install or remove fasteners Designed to withstand the high torque and force associated with impact tools in repetitive application Features two through holes and a groove to accept a Proto Retaining Ring or pin and O ring to help secure the socket to the drive tool anvil Position at appropriate angle to turn fasteners where obstructions prevent a straight application and thicker for outstanding arch support Removable FOOT FORM™ contour cushion insoles provide all day comfort and support long wear and traction on slick surfaces Steel shank is longer