Comes with mounting hardware. For use with the Thirsty Mate kayak bilge pump. Tough plastic clips will not rust, corrode or loose flexibility. Made to hold a pump 1.74 inches in diameter. Bolts onto the deck (or under deck) with stainless steel machine screws and well-nuts, The Clipper Clip, pn. CLP-1-3/4, holding range is 1-5/8 to 1-7/8 inches. Plan your installation and clip location carefully. The same clips sold as the Beckson Bilge Pump Clips. Kit Includes: two clips, four well-nuts and 4 screws. See the related article: Basics of Strap Eyes, Rivets & Well Nuts