Rocket Fire-Solid Lug Covers and Knockoffs and threaded adapters. Requires open end conical seat lugs with 3/4" hex to avoid clearance issue. Open End Lugs Sold Separately. The lug cover is held on by threaded adapter that locks into the o-ring seat and pair of vintage knockoffs. The adapters and knockoff kit includes 1 Left Hand and 1 Right Hand threaded adapter and 1 Left Hand and 1 Right Hand Polished Vintage Knockoff, 1 pair of lug covers. Choose from Polished or Painted Lug Covers and Choose from Flat or Deep Angle knockoffs.