Ceramic/porcelain Insulator for welding machines Material:95%Al2O3,Steatile Colour:white,Ivory,pink,dark.white ... Ceramic/porcelain Insulator for welding machinesMaterial:95%Al2O3,SteatileColour:white,Ivory,pink,dark.white glazedISO9001 Ceramic/porcelain Insulator for welding machines/hand extruders ...