b'The Secret to Fast Grinding? STUMP GRINDERSMINING GRADE CARBIDE TEETH.The secret to the DR STUMP GRINDER is its patented cutting head with tungsten carbide-tipped cutting teeth. The carbide-tipped teeth used on the Stump Grinder are 10 times harder than steel. In fact, carbide blades are so tough theyre used in the mining industry to drill through rock. We use the same material for our Stump Grinders. The cutter head is mounted vertically on the machine, allowing the cutter to work like a routerdischarging chips quickly and out of the way. The cutting teeth are locked into the cutter head and supported by double-sealed roller ball bearings. Spinning at 2800 rpm, these teeth take 360 bites per second! Thats why the DR Stump Grinder can quickly and easily turn any size stump into a pile of woodchips.MODELS PRO 9.2 HP PRO XL 11.7 HPSKU# ST43109BMNC ST45114BMNCST45114BENCEngine Briggs & Stratton OHV Briggs & Stratton OHVNumber of Teeth 8 8Horsepower 6.4 9.9Handlebar Height Adjustable at 83 cm, 94 cm, 101 cm Adjustable at 83 cm, 94 cm, 101 cmTowbar Optional StandardStarting Manual Start Manual or Electric StartWeight 67 Kg 85 KgDR Power Equipment|26'