1pc Metal Universal Joint For RC Cars Boats DIY Toy Accessories Cardan Joint

Pretty good quality for the price. An accurate fit on the shafts and usefully they were supplied with all needed grub screws and allan wrenches to fit them properly. Good surface finishing, no burrs or other issues and the threads were well formed. A little more play in the joints that I would ideally have liked but not enough to cause problems, they're still fine for power-transmission applications but I would be cautious using them in applications where precise position control is needed