Flex Collet Coupler for 5mm Motor Shaft and 4mm Flex Shaft Flexible Coupling RC Boat Forword, (Bettomshin)

Flex Collet Coupler for 4mm Motor Shaft and 4mm Flex Shaft Flexible Coupling RC Boat Forword Specifications:Product Model: MV-0150Connect to motor shaft: 5mm/0.2Connect to flex shaft: 4mm/0.16Length: 32mm/1.25Package Contents: 1pcs x coupler Features:1. Stainless steel, High quality replacement part.2. Use for vehicles and remote control toys new high quality drive shaft connection lock head strong and sturdy.