Spacer Type : DRA. DRA Series® spacers bolt to the hub with special wheel bolts (included) and provide new threaded holes for the existing wheel bolts. Width : 31mm. H&R produces multiple spring lines, cup kits, coil overs, ETS electronic lowering modules, VTF adjustable lowering springs, I.D. race springs, a sport sway bar program, the largest wheel spacer and adapter program in the industry, along with various accessories.