Replacement anodes for Imtra Side Power Thrusters ZINC Small 7-1190 Cross Reference: 51180 Stainless steel insert for longer life and improved bonding. Zinc Anode and Screw for thrusters with 185mm tunnels Fits Thruster Model(s): SR80, SR100, SX80, SX100, SE60, SE80, SE100, SH100, SP55S, SP65S, SP75T, SP95T, 7HP "A", HYD100 Diameter: 1-3/4 in. Thickness: 3/4 in. Replacement Screw: Not Included Replacement Screw Dimensions: 6 x 16mm