This is a replacement ProTek R/C Samurai RM.1 & RM, 321B Low Speed Needle, with an included o-ring. The low speed needle is used to regulate the fuel flow in the lower throttle range.
This is a replacement ProTek R/C Samurai RM.1 & RM, 321B Low Speed Needle, with an included o-ring. The low speed needle is used to regulate the fuel flow in the lower throttle range.