I found that on my Startt 3D printer the clamping system for the extruder head was rather 'mickey mouse' .....an allen screw, when tightened, sat off at a wonky angle, and didn't securely hold the extruder head in place. My version has the clip aligning perfectly with the recess in the extruder head and the allen screw then aligns centrally with the clip. The result is that everything is properly aligned and 100% secure......no more wobbling. A simple effective solution!!!

Can also be used with the Tronxy XY-100 and Anet A8.