FS Impulse Hand Sealers seal poly bags and other thermoplastic materials quickly and efficiently without any warm-up time. Depending on the model of the machine, material up to 20" wide and 10mil total thickness can be sealed. The sealers are equipped with a plug-in electronic timer which controls the different sealing times needed for the varying thicknesses of different materials. The timer automatically beeps when the seal is done. Available in 4", 8", 12", 16" and 20" with a 2mm, 3mm or 5mm seal width. Manufacturer's kit includes two elements and two PTFE covers.