Cadmium free, environmentally friendly.Aluminum: For salt and brackish water. Conform to: Mil-Spec A-24779(SH) Magnesium: For freshwater only. Conform to: Mil-Spec A-21412(SH)VOLVO ANODE KITS (SEACHOICE)SKU: 7.1925E+11$49.99PriceQuantity*Add to CartFeatures290 HP & 290 HP Dual Prop - Include: Anode collar between prop and gear housing (1) Block anode for gimbal housing (1) 18-8/304 Stainless steel screws DPH/DPR, SXA/DPSA & SX - Include: Anode plate for top of ventilation plate (1) Block anode for gimbal housing (1) 18-8/304 Stainless steel screws FitsSXMaterialAluminumCase6