... shells with 6", 10" and 18" length. Reaming shells (with double pads or three pads) are suitable to use in all ... standard type, it is necessary to use an appropriate inner tube extension in order to compensate for the difference in overall ... , EWT, AWT, BWT, NWT, HWT (Single Tube/Double Tube) WG Series: EWG, AWG, BWG, NWG, HWG (Single Tube/Double Tube) WM Series: EWM, AWM, BWM, NWM ...