DIAMOND PRODUCTS CC3500 PROPANE PLUS CORE CUT SAW BLADE NOT INCLUDED, AVAILABLE SEPARATELY Propane Saw Dual fuel, propane and gas powered. Activated by switch to go from one fuel system to another Uses 20lb BBQ style tank (Propane tank not included for shipping reasons). Catalytic Converter (Scrubber) optional add-on for added stage of filtration from exhaust, contact for more details Upgrade to Propane Plus for 10x reduction in CO output. Call for details. Priced with Briggs motor - highly recommended for propane conversion and better running operation. Kohler engine available upon request, contact for more details. Propane Plus Lowers CO output by 10 times verses standard propane conversions Includes catalytic converter Computer controlled system monitors and adjusts fuel mixture Provides status display of system health and check engine light Average CO output tested at 50 ppm 20% better fuel economy Features & Benefits Great mid-size saw for service, utility work and rental Jack shaft allows full engine power Easy to maneuver self propelled drive Engine adjustment mechanism for belt tightening and maintenance Strongest frame on the market 30% more torque with new jack shaft design Fits through a 30" door frame Made in the USA! CC 3500 SPECIFICATIONS Max blade diameter, in 30" Max depth of cut, in 12-3/8" Bladeshaft drive 6 belts Weight, lbs 1,050