these hexes install the same way as the factory parts for a simple upgrade

This is the Tidy Track N Scale Dust Monkeys by Woodland Scenics

INCLUDES: Six HO Scale Plastic Full Figured Folk Figures

29 Tooth Pinion Gear

HPI Racing 101417 Metal Ball 3x6.8x14mm (4pcs) RTR Pulse 4.6 Tires/Wheels these hexes install the sameHPI Racing 101417 Metal Ball 3x6. 8x14mm (4pcs) RTR Pulse 4. 6 This is a package of four 3x6. 8x14mm Metal Balls from HPI Racing for the Pulse 4. 6 RTR. Genuine HPI replacement parts, these balls form the pivots for linkages and suspension connections, keeping movement smooth and free of slop. Replace worn balls during a rebuild and the steering and suspension of your Pulse will feel tight and precise again. Genuine HPI Racing part 101417 3x6. 8x14mm