Calcium Carbide Gas Yield: 295L/KG min, Size: 1-4mm, 4-7mm, 4-15mm, 7-15mm, 15-25mm, 25-50mm, 50-80mm, 70-100mm ... , 80-120mm Calcium Carbide for high qualitySpecification:Gas Yield: 295L/KG ... 4mm, 4-7mm, 4-15mm, 7-15mm, 15-25mm, 25-50mm, 50-80mm, 70-100mm, 80-120mmPacking: in 40kg new steel ... , 200kg new steel drum, 220kg new steel drum Calcium Carbide