Package includes 8 premium sleeve anchor bolts.390 to .398" hole drill bit tolerance2-3/4" hole depthIdeal for solid concrete, solid brick, and stone1035 cold rolled steelBull nose head ensures threads will not be damaged during installationApproved for cracked and un-cracked concreteThe newly improved wedge anchor has been designed for heavy duty applications with impressive performance characteristics. The advanced design of the collar allows for anchoring in the most demanding requirements.Our wedge anchors are used as anchorage in cracked and uncracked normalweight concrete and lightweight concrete having a specified compressive strength, f′c, of 2,500 psi to 8,500 psi (17.2 MPa to 58.6 MPa) to resist static, wind, seismic tension and shear loads.