ITEM NAME:4pcs Marine Grade 316 Stainl Steel Heavy Duty Hollow Base Boat Cleat 100mm Description: Materials: Marine Grade 316 Stainless Steel Size: 10 x 1.2cm/ 4 x 0.47inch (L x W) Base Length: 3.5cm/ 1.38inch; Hole Diameter: 0.5cm/ 0.2inch Distance between the base hole centre: 3.1cm/ 1.22inch Base to Base, Hole centre distance: 2.4cm/ 0.94inch Package Includes: 4 Piece Boat Cleat.4 Piece Boat Cleat. Materials: Marine Grade 316 Stainless Steel.