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!