When using 1.630" and 1.860" it is essential to have proper clearance and tunnel protection.
 
Competition use only
 
All three lengths sold here are 5/16" and come with Big Nuts -  Short.
 
Features:
Through-hardened carbon steel stud for ice, snow and grass drags
Flat, steel tip grabs surface area and propels across the finish line
Woody's unique designed track-trapping head provides unbeatable stud rigidity and support
For use in two-ply tracks and support plates
1" head with patented track trapping design *Chisel Tooth™ 1630 & 1860 do NOT have Traction Master heads*
 
Sold in packs of 48.  Pricing in CDN dollars.