These are fantastic forks - 1 1/8 threadless for 650b wheels for tires up to 2.8 inches. There's a non-exciting story behind why we have these and originally we were going to send them back to Taiwan to be used on a Rosco iteration, but our production schedule is already jam packed. They're brand new.
They're a great choice if you want to "mullet" your old rigid MTBs and gain some tire clearance in the front. $250 and no returns.
400mm steerer tubes - no threads
399mm axle to crown