Banggod 300mm Stroke Actuator

300mm Stroke Actuator CNC Lead Screw Linear Slide Rail Guide with 42 Stepper Motor
slide is blocking on both ends
step lost
Lead Screw Rod with Nut isn't fixed and it can not be fixed as it tighten the lead screw rod
Stainless Steel lead screw rod is curved
the slide movement is uneven and curved
this piece is not usable for precise machine building