Bic 293OD Mast Base
This is a replacement mast base for a Bic Techno 293 OD (one design), with the adjustable mast track. It has the proprietary lower unit that fits into the Techno mast track, a mechanical universal joint and fits into a euro-pin extension. Original Bic manufactured part that will work just like the one that came with your board.
If you aren't sure what kind of mast base you need, check out our windsurfing mast base buyers guide.