3/8" x 3-3/4" - 20 Pieces Wedge Anchor Zinc Plated Heavy Duty Fastener for Concrete and Cement, Carbon Steel Concrete Anchor Bolts

These worked great for my purpose.

Handy for securing stuff to concrete. Be sure to use the correct sized bit so you don’t make the job harder than it has to be.

I bought this item to secure my gazebo. These anchors are great quality. But unfortunately for me they were a bit too large. I had to order smaller ones from a different company. The quality is not up to the standard of this company