White Nylon Nuts M5 Hex 4PCS 89WCS YZ10 RRP-028YZ. Ideal for use on Yokomo 89WCS (870c) layshaft asseblies as a retainer to the front drive pulley. Similar style setup as used by Masami in his 89 Worlds winning 870c prototype build.
 
Material: Nylon Plastic
Quantity: 4 pieces
System of Measurement: Metric 
Thread Pitch: M5x0.8mm
 
Good quality material and easy application.