calcium carbide CaC2 size: 7-15mm, 15-25mm, 25-50mm, 50-80mm, 80-120mm, 120-200mm Gas Yeild:285L/KG, 295L/KG, 305L/KG calcium carbide CaC2 size: 7-15mm, 15-25mm, 25-50mm, 50-80mm, 80-120mm, 120-200mmGas Yeild:285L/KG, 295L/KG, 305L/KGpacking:25kg/drum, 50kg/drum, 100kg/drum, 250kg/drum or as You RequirementPail pack colour: Black/ gray /green