5pcs 1mm/2mm/3mm/3.5mm/4mm ID ceramic tube 2mm-8mm OD alumina combustion pipe insulating porcelain bushing rods through hole

ID x OD x Length 1mm x 2mm x 7.5mm 1mm x 2.5mm x 12mm 2mm x 4mm x 2mm 2mm x 4mm x 11mm 2mm x 4mm x 22mm 2mm x 5mm x 6mm 2mm x 6.5mm x 45mm 2.4mm x 4m x 20mm 3mm x 5mm x 10mm 3mm x 5mm x 15mm 3mm x 5mm x 40mm 3mm x 5.8mm x 10mm 3.3mm x 5.3mm x 5mm 3.4mm x 7mm x 4.7mm 3.5mm x 5.8mm x 24mm 3.5mm x 9.7mm x 59.5mm 4mm x 6mm x 10mm 4mm x 6mm x 25.5mm 4mm x 7mm x 8mm 4mm x 8mm x 4mm 4mm x 8mm x 8mm 4mm x 8mm x 10mm