The Harvest Keeper? Commercial Vacuum Sealer with Instant Start Handle is a premium heavy-duty unit constructed from durable stainless steel and features a digital display with touch control to adjust settings. Preset options allow you to choose seal time, marinade mode and even manually control the vacuum using the pulse function, making this the most versatile sealer in its class. Once your settings are selected, simply press the instant start button on the handle and the sealer does the rest. Control of seal time ranges between 5?8 sec, depending on bag thickness, material and type. Seal up to 15 in wide bags or rolls with ease! Works with Roll Holder Storage Box with Cutter (#744364 sold separately) that mounts securely on the back of Vacuum Sealer.