Introduction The DW 42 in. Curved Rack Bar is 1.5 in. in diameter. With DW’s 9000 Series Rack System you can achieve even the most complicated setups. Whether you want to suspend a gong drum, or just make your rig easier to take to shows, DW has enough clamps and options to make it happen. Heavy-gauge stainless steel tubing means this rack is built for the road and DW clamps and memory locks ensure a repeatable set up every single time.