Makita DCS510-18 Commercial Grade 18-Inch 50cc 2-Stroke 3.2 HP Gas-Powered Chain Saw High power-to-weight ratio with 3.3 HP engine Automatic half throttle lock for easy starting Lateral chain tensioning for quick and convenient chain adjustment Easy clean chain compartment, clears chips efficiently ""Tool-less"" filter maintenance for operator efficiency 18"" Chain (523-102-064) 18"" Guide Bar (443-045-661) Universal Wrench (941-719-131) Carburetor Screwdriver (944-340-001) Torx Wrench (940-827-000) EA3201S35B DCS642120 DCS51020 DCS3416 DCS46018 UC4030A UC3530A DCS34 5012B Double air filtration High power-to-weight ratio Easy maintenance Low noise operation Non-CARB Compliant/Not For Sale In California