DDP Elite USA Hudson Cranial Drill Set is an instrument specifically deigned for use in neurosurgical procedures. Procedures such as craniotomies require access through the hard skull layer to the softer underlying brain tissue. This set includes a Hudson brace, 1 Hudson burr with a 10 mm, 14 mm and 22 mm diameter, a Cushing burr at 16 mm diameter and a cerebellar extension. All of this instrumentation is invaluable in neurosurgery that requires precise tool for quick and accurate cutting. Please note that website images are often representative of the product family and may not conform to the exact specifications or features of the item you select. The final specifications will match the description of the specific catalog item you select. Please review such specifications in the item description to ensure the correct product is ordered.