... . Gravity casting trucks 3. Pro skate bearings 4. PU casting wheels 5. top quality grip tape KOSTON maple skateboards - SB031 DECK:Material ... and pad printing.PU bushing: Hardness 90A.BEARINGS:1. 608RS Pro skateboard bearings2. Fast, Long Lasting, Easy cleaning3. Rubber shield, nylon ... skateboard grip tape.Material: environmental PVC substrate, silicon carbide. KOSTON PRO skateboard completes - SB031