The Whitecap 4-1/2" Hollow-Base Chrome-Plated Zamac Cleat is a tradition horn cleat that is made for freshwater use only. Specifications• Center to center hole dimensions across: 1-3/4"• Center to center hole dimensions same size: 1-1/8"• Length: 4-1/2""• Height: 5/8"• Fastener: #8 (4)• Material: CP Zamac 4-1/2"" long Constructed from Zamac #8 fasteners | Whitecap Hollow-Base Chrome-Plated Zamac Cleat, 4-1/2", Freshwater Only