TRYGG “SMT Flexi” is available in 8mm and 9,5mm studded chain. This model replace more efficiently the ring chain used on farm tractor in the past. Made to be easily adjusted by user to a perfect fit on tire. The Trygg “Flexi link” makes it possible to adjust the chain without the need of any tools! The chain will fit perfectly on all brands as well new or worn tires. The TRYGG “SMT Flexi” are produced of steel alloys with boron, nickel, chrome and manganese and hardened in one piece for a maximum chain durability. The studs are oversized to improve on grip and prolong chain life. Hardened hooks and 8mm hardened side chains are standard on both chain size. Excellent traction, smooth drive, a proven efficiency, a very versatile chain. Tightening rail is available as an option.