Syntec 7" Transitional/Ceramic Cup Wheel - 400 Grit with Threaded Arbor Quik Drive Cement Board Screws The Rod Coupler head is

The Rod Coupler head is designed for 1/4" threaded rod

The Simpson Strong-Tie Stainless-Steel Bugle Head Wood Screw is built for outdoor decking projects where strength and durability are essential

Install until head is snug against the material surface

For professional results

Allowable uplift loads have been increased 60% for wind or earthquake loading with no further increase allowed

Syntec 7" Transitional/Ceramic Cup Wheel - 400 Grit with Threaded Arbor Quik Drive Cement Board Screws The Rod Coupler head isSyntec 7" Ceramic Cup Wheels are designed to improve the quality of edgework and to reduce scratches and gouging that metal cup wheels cause. These Transitional Cup Wheels have very aggressive grinding patterns which result in a superb finish. Ceramic Cup Wheels are compatible with metal and concrete. A higher grit results in a smoother, almost reflective finish.