Super strong for concrete installations - Recommend using at least 4 screws per anchor. 1 Handy Pak per 12 anchors if you use 4 per anchor. These patented fasteners are "UberGrade" as the manufacturer likes to say.

This fastener rates 2120 lbs/in of Tension Pullout and 2055 lbs/in of Shear strength in 2000 psi concrete.

NOTE: If your concrete is very old or you are in the Eastern States where many concretes contain higher granite composition you will require a high end drill bit. The drill bit provided is medium quality and not designed for extreme concrete density.

Use a minimum of four or a maximum of eight ¼”x 2-1/4” screws to secure 6x6 or 4x4 anchor to concrete surfaces.

Requires T30 star drive bit. Handy pack includes a concrete drill bit.