Thanks for your interest. VM10-H specifications Max Cylinder Diameter 350 mm 13.75 in Max distance between chipper heads 280 mm 11 in Min distance between chipper heads 60 mm 2.36 in Max log length 6.5 m 21.33 ft Min log length 2.5 m 8.2 ft Speed range up to 180 M/min 590 ft/min