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The Tecnoseal sacrificial anode for propeller shafts is made of high-purity zinc, specifically designed to protect submerged metal parts from galvanic corrosion. Its shape and dimensions are optimized for a perfect fit on Riva vessel shafts, ensuring long-lasting and effective protection.

| Code | Material | kg | lbs | h | h1 | i | Ø | Ø1 | Ø2 | Ø3 | Ø4 | |
| 00439/1 | Zinc | 15 | 33.07 | mm inch | 100 3.94 | 65 2.56 | 110 4.33 | 180 7.09 | 13 0.51 | 92 3.62 | 28 1.10 | 12 0.47 |