2Pack Vgoohobby CNC Stainless Steel RC Flex Collet Coupler Flexible Coupling Motor Shaft Locker for DIY RC Boat Submarine (5mm to 4mm)

Compatible with DIY RC electric boat,used to connect the motor with the drive shaft.
Made of stainless steel,durable to use.
Connect to Flexible Shaft :4mm
Connect to Motor Shaft:3.17mm / 4mm / 5mm /6mm(Optional),A variety of sizes available to be chosen.
Well made,a good replacement for your old or broken one.
Product Description
Compatible with DIY RC electric boat,used to connect the motor with the drive shaft.
Made of stainless steel,durable to use.
Well made,a good replacement for your old or broken one.
A variety of sizes available to be chosen.
Material: Stainless Steel
Connect to Flexible Shaft :4mm
Connect to Motor Shaft:3.17mm / 4mm / 5mm /6mm(Optional)
Package List:
2x Flexible Coupling
2 x Grub Screw