Mirage Drive Standard Mast - non-threaded for pre-V2 drives.
Works with both the Standard Fin and ST Fin. These are very durable, but will eventually work harden and fail if bent back into alignment enough times. So if you're in a stumpy area, having a spare mast isn't a bad idea.
Compatible with both oldest and older (pre-V2) Mirage Drives. On the oldest Mirage drives (those with stainless sprockets), order the stainless steel cotter pin to complete installation. On the older drives, the set screw in the sprocket will hold the mast in. You'll need a 1/8 inch Allen wrench to install the new mast.