Machined, recessed dots on the outer edge indicate size while assembled within the slipper assembly for easy identification:

1 dot = 69 tooth
2 dot = 72 tooth
3 dot = 75 tooth
4 dot = 78 tooth
5 dot = 81 tooth
6 dot = 84 tooth
7 dot = 87 tooth
Features:

JConcepts simple design and function
Precision machined for durable and concentric design
Machined to indicate size while assembled or stand-alone
Fits Associated B4.1, T4.1, B44.1 and SC10 vehicles
JConcepts - World Proven Innovation and Design

Part Compatibility:

Team Associated SC10
 Team Associated RC10B44.1
 Team Associated RC10T4.1
 
Team Associated RC10B4.1
 Team Associated RC10B4.2
 Team Associated RC10T4.2
 
Team Associated SC10.2
 Team Associated RC10B44
 Team Associated RC10B4
 
Team Associated RC10T4