Deck Cleat Material:All Dock Cleat and Free Fasteners are made of Marine grade 316 stainless steel, Excellent seawater corrosion resistance and durable.Rope cleat work for dock lines ,mooring and etc;Product Includes: 2 pieces of deck cleat, 4 pieces of M8 x 45mm bolt and nut ,2 pieces of M5 x 45mm bolt and nut ,6 pieces of washers , 6 pieces of Split lock washers .(All accessories are stainless steel 316).Quality InspectionSilica sol precision casting, integrated casting, each product undergoes 3 quality inspection procedures, product size quality inspection, 72 hours product salt spray test, product infrared spectrum test, to ensure excellent quality;Flip Up Dock Cleat Size: Length of all: 6 inch (155 mm); Width: 2.1 inch(53.8 mm);Raised height: 1.8inch (45.9mm); Recessed height: 0.53 inch(13.5 mm);Bolt hole spacing 3.36 inch(85.5 mm) (center to center);Multi Purpose:High polished surface for mirror-like aearance to match marine uses watercraft/boat/yacht,boat docks, decks, piers for tying up boats, kayaks, jet ski's,etc.Smooth edge avoids cutting of rope or foot injury;