These two tools fit over 50mm axle nuts. They feature a 1/2 drive slot for use with a torque wrench or ratchet wrench. They are thin enough so they can be used at the same time. Fits YFS200 Blaster 88-03, YFB250 Timberwolf 92-98, YFZ350 Banshee 87-03, YFM350 Big Bear 87-95 and YFM350X Warrior 87-03. Sold as pair.