Mastercut SF-5FM 1/2" X 1" Radius Tree Shape Alumacut Carbide Burr Part Number: SF-5FMSKU: MTOSF-5FM $34.62 Clear Options Qty: Add to Cart Order In Bulk Add $250.00 worth of items to your cart to qualify for free shipping. Item Details Mastercut Aluminum Tree Carbide Burr with a cutting length of 1" and overall length of 2 3/4" has a cutting diameter of 1/2" and has a 1/4" shank.