Stainless Steel 5-5/8" Chock. High Quality 316 Stainless Steel with soft internal radius for minimum chafe. Max line size 5/8" (16mm), Length 5-5/8" (143mm), Width 1" (25mm), Height 1-3/4" (44mm), Weight , Requires (2) 3/8" Flat Head fasteners on 4-3/4" centers.