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 min ... -15mm, 7-15mm, 15-25mm, 25-50mm, 50-80mm, 70-100mm, 80-120mmPacking: in 40kg new steel drum, 50kg new ... , 200kg new steel drum, 220kg new steel drum. Calcium Carbide