Classy material: the heating is made of chromium, features with high resistivity, low resistance temperature coefficient, high temperature of use, good corrosion resistance against high temperature, fast heating, durability and not easy to break Easy to operate: require just a screwdriver for installation on most machines, try to change the old to have a better bag sealing function in daily use, replace the kit when the PTFE (cloth) is warning, changing color, or the seal effect is not good Appropriate size for you to use, please check the size carefully purchase Applicable situations: suitable for most machines with the number 400 as part of their model number, for example, compatible with F-400, -400, -400 Type: 400 Type Colour: Silver Material: chromium Size: 455 x 2mm Package Contents: 10 x impulse sealer heating 10 x corresponding cloth tapes Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.