45NRTH has been the king of winter cycling for years now. One of the best products they have introduced are their concave, hollow-tipped studs. Now even better than normal studs, are the new and improved 
XL Studs. These studs will work in any 
45NRTH tires that take studs, and also work great in the soles of your 
45NRTH Wolfgar boots. The super-sized crown tip with twice the surface area of the normal stud, the 
XL Stud uses the same two piece construction design. The 
XL Stud from 
45NRTH is simply put the best and safest winter stud available. 
- Sold in packs of 25 and 100
 - Requires a stud tool for installation
 - Works with and studded 45NRTH tires
 - Fits the sold of the 45NRTH Woflgar boots