E-Z Tire Balance Beads Deluxe Kit 37x12.50r15 37x12.50r16 37x12.50r18 37x12.50r20 37x13.50r17 37x13.50r18 37x13.50r20 10 oz X 4=40 Ounces, Applicator, Filtered Valve Cores, Chrome Caps Includes 4 bags of 10 Ounces each (40 total), Applicator Kit, 4-Filtered Valve Cores, 4-Chrome Caps Premium ceramic internal tire balancing beads, durable, re-usable, environmentally friendly. Provides a glass smooth ride, all the time. Dynamically re-balancing tire during every ride. Dramatically extends tire life, preventing cupping. Eliminates the need for unsightly spoke or wheel weights that can fall off. E-Z installation either by adding the beads during the tire mounting process or using the supplied valve core application kit.