Replacement anode for Imtra Side Power Thrusters Large - ZINC - 201180 Stainless steel insert for longer life and improved bonding. Zinc Anode for thrusters with 250mm/300mm tunnels (2 needed) Fits Thruster Model(s): SE120, SE150, SH160, SE130, SE170, SE210, HYD220, SP200TC-32V, SP240TC, SP285TC, HYD300, SP125T, SP155TC Amount Required: 2 Diameter: 1-7/8 in. Thickness: 1-11/16 in. Replacement Screw: Not Included Replacement Screw Dimensions: 6 x 30mm