These brackets are intended to be used with a 2x4 board and 4 pieces of (electrical conduit) pipe, for this kit. The holes in the 2x4 are for bolting chains to it. Chain mounting kits can be purchased here.
These brackets are made out of 3/8" Thick A36 metal.
Warnings Please note: Shooter and all spectators must wear safety glasses in case of flying spatter. It is required that shooters wear appropriate hearing protection. Discontinue use if target becomes damaged. Disclaimer: Buyer assumes all responsibility for the use and misuse of the targets purchased.