Black Nylon and stainless steel quick-release pins for securely mounting your MAXTRAX on a roof rack or bars. The set includes 4 pins that can securely hold 2 sets of MAXTRAX MKII, or 1 set of MAXTRAX MKII and 1 set of MAXTRAX XTREME, or 2 sets of MAXTRAX XTREME. 4 stainless steel Nylock nuts, and 4 flat stainless steel washers. There's a hole in the top of each mounting pin for a padlock.
It can accommodate a lock to secure your Maxtrax.