Stainless Steel 7-1/2" Chock. High Quality 316 Stainless Steel with soft internal radius for minimum chafe. Max line size 3/4" (19mm), Length 7-1/2" (190mm), Width 1-1/2" (37mm), Height 2-1/8" (54mm), Weight 1.87lb (.85kg), Requires (2) 1/2" Flat Head fasteners on 6-1/8" centers.