5pcs Expansion Bolts Heavy Duty Anchor Fastener Eye Bolts for Concrete Wall 11x1.6cmJIXINGYUAN

1、The depth of drilling must be ≥7cm / 2.8in and the diameter of drill bit should be 16mm / 0.6in. 2、Use a 16mm drill bit mounted on the electric drill and make holes where you need them. Then the expansion screw can be easily inserted into the hole and to be tightened and fixed. 3、About 11cm / 4.3in of the full length and diameter of 16mm / 0.6in suitable for cement concrete material. 4、250kg / 551.2lb(approx.) of the load bearing makes it can be safely used. (the premise is the quality of cement concrete to meet the standard) 5、Use the wedges angle to promote the expansion to produce friction and binding force to achieve the fixed effect.