The Vermeer BC1500 brush chipper uses a precision-balanced 22.5-in (57.2-cm) drum with two 5-in x 8-in (12.7-cm x 20.3-cm) A8 double-sided knives to chip through material up to 15 in (38.1 cm). Powered by a Tier 4 Final Cummins diesel engine and a PSI 5.7L gas engine, the BC1500 can handle the toughest of material with ease.