To be mounted directly on the transom of the boat.Nylon and stainless steel components.UV resistant.Does not fit weaver branded davits.See replacement parts below - Snap Davit Accessories & Spare Parts.Other Details: Part No. Description Material Colour Mounting Holes(mm) Clip Base(mm) Pad Base(mm) 39190 Snap Davit Kit suits PVC Inflatables PVC White 4 x Ø 7 1 x Ø 10 110 x 74 267 x 120 39192 Snap Davit Kit suits Hyperlon Inflatables Rubber Grey 4 x Ø 7 1 x Ø 10 110 x 74 267 x 120