The SDRN114 Sealer is for 1 1/4"(32mm) from .025" (.64mm) to .035(.89mm) Steel Strapping. The SDRN114 is a side action, heavy duty, double reverse notch sealer. This is a high quality USA made product suitable for heavy use.
On flat surfaces you would use a 818 semi open seal.
On round surfaces you would use a 803 heavy duty pusher seal.
