Bachmann 92421 (Large Scale) Standard Metal Wheel Set (4 Per Card) Crawler Tires Square-lug technology throughout the tread

Square-lug technology throughout the tread design

supplied unpainted so you can finish it in the color scheme of your choice

Hitec HS-85BB Premium Micro Servo

glued (Method Racing wheels

streamlined hard-case that tucks into the tightest builds

Bachmann 92421 (Large Scale) Standard Metal Wheel Set (4 Per Card) Crawler Tires Square-lug technology throughout the treadBachmann 92421 (Large Scale) Standard Metal Wheel Set (4 Per Card) Upgrade your large scale rolling stock with Bachmann's standard metal wheel sets. Metal wheels add weight down low for better tracking, roll more smoothly than plastic, and stay cleaner longer they also help keep grime from building up on your rails. With four wheel sets per card, one pack handles a typical car. A simple swap that pays off every time you run. Four standard size metal