RC crawler enthusiasts, these brass wheel hub adapters are a game-changer for your TRX4M Bronco or Defender! The gold-colored brass construction adds strategic weight down low where it matters most - improving your center of gravity for better stability on tricky terrain. Each set includes 4 hex adapters weighing 22g total, made from high-quality brass that's both durable and performance-enhancing. The 3.5mm center hole fits perfectly with TRX4M axles, and installation is straightforward. That extra weight in the wheels makes a noticeable difference in rear traction and climbing ability - your rig will handle steep inclines and rocky surfaces much more confidently. The brass material wears well and maintains precise tolerances for consistent performance. If you're serious about RC crawling and want to upgrade from the stock plastic hexes, these brass adapters deliver professional-level performance without breaking the bank. They're compatible with 1/18 scale TRX4M models and work with most aftermarket wheels too. The weight distribution really helps prevent rollovers and improves overall handling characteristics. Seriously, if you want to take your RC crawling to the next level, these brass hub adapters are one of the most effective upgrades you can make - better traction, more stability, and they look awesome too!