"Never pay lease or rent charges again Brand new industrial-grade welding gas cylinder has never been filled. Refillable and exchangeable. Used for MIG welding applications where a 75 argon/25 CO2 shielding gas is required. Works well with Hobart Handler MIG welders. Compatible With Argon and shielding gas, Diameter in. 7, Dimensions L x W x H in. 7 x 7 x 43, DOT Approved Yes, Capacity cu. ft. 125, Product Type Cylinders, Valve Type CGA 580 female. #4 size Empty For MIG welding applications where a 75 argon/25 CO2 shielding gas is required Works with Hobart Handler MIG welders"