These diamond-pattern, square-link snow chains SXP 550 SNOX PRO from Pewag provide excellent traction in snow and ice. They are great for vehicles with front-wheel drive. No rings, no hooks, no re-tensioning: chain mounting is simpler than ever before. How is that possible? The solution is the unique technology housed in the Pewag snox-box. The chains can be installed so easily that you'll be on the road in minutes. Just pull the chains onto your tyres and the unique self-centering, self-tensioning system tightens automatically as long as your wheels are rolling. The tensioners release when the vehicle stops, making it easy to loosen the chains for removal. Made of stainless steel, these chains are durable and rust-resistant. They are equipped with plastic bumpers to protect the rims from scuffs or scratches. The chains fit the following tyre sizes: 195/80 R14, 195/75 R15, 205/70 R15, 215/65 R15, 225/60 R15, 185/75 R16, 195/65 R16, 205/65 R16, 215/55 R16, 225/50 R16, 245/45 R16, 205/55 R17, 215/50 R17, 225/45 R17, 235/45 R17, 245/40 R17, 215/45 R18, 225/40 R18. Note: Please check your car's instruction manual to verify the correct chain size for your car and tyres. The tyre is not included in delivery.