The Optimist deck collar is made from Delrin to minimize friction between the sleeve and the collar. Its oval inner diameter ensures maximum fore/aft movement while minimizing side play. The tapered design allows for mast raking. It features 4 countersunk mounting holes, with a deck hole size of 57 mm. The SL91210 includes a separate sleeve to be fitted around the mast at deck level, offering additional protection against wear.
