Cut circles or straight lines with any oxyfuel cutting torch. Equipped with two wheels and centering pin This handy tool is ideal for shop or maintenance department that must occasionally cut circles or straight lines but where expensive equipment is not practical. MAGNETIC HOLDING BASE for Model CB-20 or Model CB-30 Circle Burner Magnet with 16 lbs.(7.3kg) direct pull holds centering pin in place, frees your hand and allows you to focus your attention on the torch. (Caution: Magnet should not be used when cutting circle with less than a 6” radius.)