Slime self-healing Smart Tubes come pre-filled with Slime sealant to prevent flats. As the tire rotates, centrifugal force pushes the sealant to the tread, sealing punctures as they occur and treating existing leaks.

• Pre-treated with 8 oz of Slime sealant
• Seals punctures up to 1/8"
• Works instantly and repeatedly
• Installs like a standard tube
• Lasts up to 2 years
• Tube size: 4.80/4.00-8