VPI › HW-16 Upgrade Kit Image 1 of 1 HW-16 Upgrade Kit £156.00 All parts and accessories needed to modify your HW-16 to a 16.5 with the HW-16.5 Mod Kit (Tube, Holder, Support). Add To Cart Added! All parts and accessories needed to modify your HW-16 to a 16.5 with the HW-16.5 Mod Kit (Tube, Holder, Support). Where to buy + You Might Also Like Replacement Brushes £26.40 RCM Brush £72.00 HW-17 Brush Assembly £184.40 RCM Wooden Platter £60.00 White Hose Clamp £9.60