These parts fit on the bass drum hoops, accept the BD tension rods. This solid little claw is one of our all time best sellers. It has a nice recessed notch for KEY rods. You may need to used thick nylon washers to mate this claw with a T style bd rod. You'll find other suppliers charging nearly a buck more per claw, compared to our low price! These now have a deluxe dureable rubber lining to fully protect your bass drum hoops.