7 Model 01 Attritor With simplified electronic variable speed drive and 1400cc tank. Model HD-01 Attritor With variable frequency drive and cryogenic cover. Model HD-01 Attritor With variable frequency drive, read-out with RPM and percent torque; also with bottom discharge valve, electrical drive, and peristaltic pump for circulation. Model HD-01/HDDM-01 Attritor With VFD (variable frequency drive) with quick belt change. Shown with HDDM tank with special side discharge valve. Model HD-01 Attritor With explosion-proof variable frequency drive (mounted remotely). Includes explosion-proof operator station. Mounted on portable stand with heavy duty casters. Model HD-01 Attritor With variable frequency drive (mounted remotely) with flame-proof operator station. CE-marked for Europe.