Glacier HEAVY TRUCK, Twist Link- Cam Type - Singles Durable traction, light weight, and economical. Tough, durable carbon steel twist link cross chain Adjusters recommended. Sold separately Made with cam (SC) or non-cam (S) locking side chain Heavy duty lever fastener for easy mounting Light weight and easy to install Qualified Discount: Vet/Senior, Business or Gov’t call 800 770-0077 Our number one priority is your safety at work and on the road. We provide Pewag Products “Made in USA”!