5Pack Universal Rotatable Steering Shaft U Joint Coupling Motor Connector Coupler for RC Car Robot Crawler Boat 4mm to 4mm

Used in direct-axis motor, motor for the brush motors and small brushless motor.Compatible with RC Car Robot Crawler Boat.

Made of high quality metal,durable in use.

360 degree rotatable universal joint.

A variety of sizes available to be Optional:3mm-3mm/

Pack of 5Pcs,with made,a good for your old or broken one.

Used in direct-axis motor, motor for the brush motors and small brushless motor. Compatible with RC Car Robot Crawler Boat. Made of high quality metal,durable in use. 360 degree rotatable universal joint. Well made,a good for your old or broken one. A variety of sizes available to be chosen. Specificaton: 3mm to 3mm: Hole diameter:3mm to 3mm. Outside diameter:9mm Length:23mm Fastening Screw Size:M3 Color: Silver. to 4mm: Hole to 4mm. Outside diameter:9mm Length:23mm Fastening Screw Size:M3 Color: Silver. 4mm to 4mm: Hole to 4mm. Outside diameter:9mm Length:23mm Fastening Screw Size:M3 Color: Silver. 4mm to 5mm: Hole diameter:4mm to 5mm Outside diameter:11mm Length:24mm Fastening Screw Size:M4 Color: Silver. 5mm to 5mm: Hole diameter:5mm to 5mm Outside diameter:11mm Length:24mm Fastening Screw Size:M4 Color: Silver. 6mm to 6mm: Hole diameter:6mm to 6mm. Outside diameter:11mm Length:24mm Fastening Screw Size:M4 Color: Silver. Package includes: 5 x Universal Rotatable Metal Joint 10 x Holding Screw