No.	PRODUCT	MANUFACTURER	PRICE	RATINGS	POPULARITY	LINK
1.	BQLZR Golden 2.3 to 4mm Shaft Coupling Motor Connector Brass Joint for RC Model Motor Pack of 2	BQLZR	£4.12		4.8	VIEW PRODUCT
2.	TRIXES 300mm Silver Flexible Drill Bit Holder Extension 360 degree rotation DIY	TRIXES	£1.99	(from 3 reviews)	4.6	VIEW PRODUCT
3.	BQLZR Golden 3.17mm-4mm Brass Shaft Coupling Coupler Motor Transmission Motor Connector Pack of 2	BQLZR	£4.11	(from 2 reviews)	4.5	VIEW PRODUCT
4.	5x6mm CNBTR Rotatable Motor Shaft Universal Joint Connector Metal Coupling Pack of 2	CNBTR	£3.02		4.5	VIEW PRODUCT