Twisted Tungsten heater electric vacuum parts, colorful or black and white kinescopes, aluminum spraying, plastic spraying and s Twisted Tungsten heater electric vacuum parts, colorful or black and white kinescopes, aluminum spraying, plastic spraying and so Material: TungstenSize:0.3-0.8mm diameter.Wire Quantity:2-4pcsApplication: electric vacuum parts, colorful or black and white kinescopes, ...