SwissBurr hand deburring tools are a fast effective and efficient way of deburring holes, slots and edges. Swiss Burr is a totally modular system of interchangeable handles, holders and blades designed to cover all applications. A choice of HSS or carbide blades, countersinks and scrapers are available to suit your specific application. Swiss Burr blades are also interchangeable with commonly available brands including Kennedy, Noga, Ruko, Seco, Snap-Tap and Stellram.F12 - HSS countersink for hole edges up to 12mm dia.F20 - HSS countersink for hole edges up to 20mm dia.F30 - HSS countersink for hole edges up to 30mm dia.