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- Opti Spar Mast Step round cup by Optiparts
Opti Spar Mast Step round cup by Optiparts
Opti Mast Step Round Cup by Optiparts
The mast step cup is inserted to the mast step base to create the round cup version of the Opti mast step. The cup has an oval shape so that the mast can tilt and so that the rake can be adjusted.