Review on CNCCANEN 300mm SFU1605 Ballscrew with BF12/BK12 Anti-Backlash Nut Housing and 1Pcs Coupler for CNC Machine DIY by Josh Flanagan

Very good quality for the price. The end of the BK-12 case had 0.005 radial clearance, but I was expecting that. I'm going to use this on a CNC router and switch the bearings to angular bearings. However, I put two 0.2mm shims between the original bearings and the end play is reduced to around 0.0005 which surprised me, but I'm still planning on replacing them with AC bearings. Excellent packaging. I will buy from this supplier again.