Packing list：

2 x HGR20 linear guides ​

4 x blocks with Grease nipple ​

1 x SFU1605 ball screw with nut ​

1 x BKBF12 support ​

1 x DSG16H nut housing ​

1 x XB D25L30-8mm*10mm coupler （for Nema23）

if you need other coupling，please contact me

​Notice：the length you choose is total length，drive lengtth =total length -110mm