Tanaka Commercial Grade Lightweight Gas Powered Straight Shaft Grass Trimmer / Brush Cutter 21cc 1.1 HP 2-Stroke (CARB Compliant) TBC-225 21 cc, 1.1 h.p. commercial grade, two-stroke engine 4" semi-automatic trimmer head Solid steel drive shaft Walbro carburetor with primer 9.5 lbs. (4.3 kg) with cutting head