11 Tooth driver for 1.75" Arctic Cat / Yamaha driveshaft for those switching to the popular 2 ply 2.52" pitch tracks such as the Hacksaw, Ripsaw, and speed tracks among others. These drivers have antiratchet points as well as involute Points. Avid call these their Mseries drivers as the antiratchet points run in the clipped track windows and the involute bumps drive off of the four rows of rubber track bumps found in between the track windows. These are sold individually, you will need to two per snowmobile. If you have a Yamaha or Arctic Cat and your driveshaft is prior to the 1.75 Procross shaft these are NOT the correct drivers for your sled.
 
Sold per each.