Cylindrical Borers 2 wing 2 Scribes with parallel shanks TCT

DESCRIPTION 2 wing with  centre point and with or without scribers and parallel shanks. Right hand with centre point. These boring bits must be used in fixed head machines only, never in hand-held routing machines or hand-held drills. Softwood, Chipboard – Use Scribers: 15mm-35mm 3000-6000 RPM, 35mm-50mm 3000 RPM, 50mm-100mm 2000 RPM. Hardwood – Use Scribers: 15mm-35mm 3000 RPM, 35mm-50mm 3000 RPM, 50mm-100mm 1500 RPM. MDF – Use Scribers: 15mm-35mm 3000-6000 RPM, 35mm-50mm 3000 RPM, 50mm-100mm 1500 RPM. Laminate – Use Scribers: 15mm-35mm 3000-6000 RPM, 35mm-50mm 3000 RPM, 50mm-100mm 2000 RPM. Diameters of 20mm and above with Scribers will burn at over 6000 RPM. Do not use Scribers on solid laminates. Router Machines: Softwood, Hardwood, Chipboard, MDF, Laminate – No Scribers over 6000RPM: 15mm-35mm 10000 RPM, 35mm-50mm 6000 RPM, 50mm-100mm 3000 RPM.