Exact-HSS-E-Tube-Sheet-Drill-Sets-3-14-4-20-16-30-5mm-Drill-Paste-Exact-05228-For-burr-free-drilling-&-reaming-of-sheets-tubes-&-profiles-br-Laser-scaling-hole-Ø-&-numbers-of-revolutions-Operating-instruction-on-the-tool-Exact-05228-HSS-E-Tube-Sheet-Drill-Set-3-14-4-20-16-30-5mm-Drilling-Paste