Optimist deckcollar with an oval and tapered inner diameter. The oval inner diameter allows the maximum fore/aft play and minimum side play. The tapered inner diameter allows the mast to be raked. 4 countersunk mounting holes. Hole size in deck: 57 mm.
The EX1210 has a seperate sleeve which is fitted around the mast at deck level and protects the mast from wear.
