Rotary Evolution replacement blades are made of black etched carbon steel. The set contains 12 blades and the screws that go with them, so a blade change is done in one go without hunting for fasteners.
The set replaces Sunseeker 16600850-02 and fits Sunseeker X3 RTK, X3 Plus RTK, X5 RTK, X7 and X7 Plus, V3 and V3 Plus, L22 and L22 Plus.
Change all blades at the same time. A robotic mower runs with its blades balanced against each other, and a single new blade among worn ones makes the disc run unevenly.