Tube Riser Lip-plate   Silver 925 Silver 925 Silver 925   Silver 958 Silver 958 Silver 958   Silver 925 Gold 14K Silver 925   Silver 925 Gold 18K Silver 925   Silver 925 Gold 22K Silver 925   Silver 925 Gold 14K Gold 14K   Silver 925 Gold 18K Gold 18K   Silver 925 Gold 22K Gold 22K   Gold 14K Gold 14K Gold 14K   Gold 18K Gold 18K Gold 18K   Gold 22K Gold 22K Gold 22K   Platinum Gold 14K Gold 14K   Platinum Gold 18K Gold 18K Tube-wall thickness: silver 0.4mm, 14-carat gold 0.3mm, 18-carat gold 0.3mm, 22-carat gold 0.3mm, platinum 0.3mm. All head-joints are available with a straight or curved lip-plate to choice.