ITEM NAME:Anchor Chain Stopper for 5/16" to 3/8" Chain - Marine 316 Stainless Steel, NEW Description: Marine grade 316 stainless steel construction Dimension: 2.28" length x 2" width x 1.85" height/5.9x5.1x4.7cm Mounts alone or inside most anchor rollers Helps to prevent damage to windlass Use with Chain 5/16" to 3/8" Package Includes: 1 Piece Chain Stopper Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!.1 Piece Chain Stopper. Marine grade 316 stainless steel construction. Mounts alone or inside most anchor rollers. Use with Chain 5/16" to 3/8". Color may be slightly different since different monitor.