E-Z Tire Beads - Balancing Beads Stainless Steel Filtered Valve Cores - 4 Pack 4-Pack of specially made stainless steel cores that have a filter on the end that should be installed when using any type of balancing bead. Premium quality. Can be used in, truck, motor home/RV, 4x4 and other tires. Not recommended for most motorcycle applications due to core length. Please be sure you have stems that accept at least 1 1/2" core before any bend. For use with our premium internal tire ceramic balancing beads (see our "E-Z Tire Beads" listings). See E-Z Tire Beads "Kits" that include beads and installation applicator bottle, tube, valve core removal tool.