Copper Alloy Bottom Needle Shaft Copper Sleeve for Astor 150/160/178/180/2000/220 Sewing Machine Bushing

Astor 150/160/178/180/2000/220 Sewing Machine Bottom Needle Shaft Copper Sleeve, Threading Machine Replacement Copper Sleeve Spare Parts Product Introduction This bottom needle shaft copper sleeve is a precise‑fitting replacement part compatible with Astor 150,160,178,180,2000,220 sewing and threading machines. This copper sleeve works as a core bushing component for the bottom needle shaft, reducing shaft friction and stabilizing high‑speed machine operation. Our copper