CFR › Title 21 › Part 882 › §882.436021 CFR §882.4360Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Identification. An electric cranial drill motor is an electrically operated power source used with removable rotating surgical cutting tools or drill bits on a patient's skull.(b)Classification. Class II (performance standards).