סירת קוארץ לתנור צינור L-100mm,W-40mm,H-18mm

Quartz boat L100xW40xH18mm, Length 100mm,
Width 40mm, Quartz glass, Height 18mm,
top open, half round shape with 3mm eye,
fits in a furnace tube with innerdiameter
arger than boat width plus 10mm