Manufacturer part #: EX12101
The grey deck collar has an oval and tapered inner diameter. The oval inner diameter allows the maimum fore/after play and minimum side play; the tapered inner diameter allows the mast to be raked.
There are four countersunk mounting holes. Hole size in deck: 57mm. The EX12101 has a seperate sleeve which is fitted around the mast at deck level and protects the mast from wearing. The EX12101 is the deck collar ONLY.