4-6oz Checkered Flag Tire Balance Beads, Zr Compound Tire Balancing Beads 275 70r16, 265 70r16, 265 75r16, 255 85r16, 255 70r16, 245 70r16, 245 75r16, 235 85r16, 265 70r17, 265 75r17 Free Stem Cores Processed within 1 business day and shipped FREE Priority Mail 4- 6oz bags of Ceramic Compound Tire Balance Bead - w/ free cores and caps ECO friendly Ceramic Beads cause ZERO threat to the environment Provides a smooth ride. Re-balancing the tire from every stop. Extends tire life, preventing cupping. Eliminates the need for spoke or wheel weights that can fall off. Google us for tire balancing charts and get amount of balancing beads needed per tire