A Devilfish (E01900) is a brass sleeve cutlass bearing that provides a wear surface between propeller shafts and struts or rudder shafts & rudder ports. Designed to have a rubber oil-resistant shaft and is chemical resistant. The rigid outer shell is from a naval brass super-bonded to a fluted rubber. The resilience of the rubber liner allows bearings to dampen noise and vibration. This strut tool is always required when replacing a bearing to prevent it from freezing or corroding in place. Key Features: Engineer to meet the high durability requirements in corrosive and abrasive marine or industrial applications. Made from the naval brass outer shell, a super bonded to a fluted rubber bearings surface will outlast surface bearings by more than 10x. Manufacture a precision molded and machined for consistently accurate dimensions and concentricity. Specifications: Brand: Sea Star Solutions SKU: DEVILFISH Weight: 1.44 lbs Size: 1 3/8 inches inside diameter 1 7/8 inches outside diameter 5 1/2 inches long