MCH 3 Air Powered Round Chuck Chipping Hammer with Oval Collar Retainer EcoSmart modern look with a subtle modern look with a subtle sheen ) 17 Manufacturer Warranty Lifetime Limited Warranty Certifications and Listings CSA Certified Requires 33 CFM at a minimum of 100 psi for maximum power and efficiency ) 18 Project Type Construction Hose Included No Included No additional components or accessories are included Variable Speed Yes Recommended operating pressure (psi) 100 Air Tool Type Chipping Hammer Returnable 180 Day Maximum blows per minute 2280 Air consumption at recommended operating pressure (CFM) 33 Air Inlet Size 3 8 in Product Depth (in