Classy material: The heating element is made of nickel chromium, featuring high resistivity, low resistance temperature coefficient, high-temperature tolerance, good corrosion resistance at elevated temperatures, fast heating, durability, and resistance to breakage. Easy to operate: Requires only a screwdriver for installation on most machines. Replace old elements to improve bag sealing performance during regular use. Replace the kit when the PTFE cloth shows signs of wear, discoloration, or reduced sealing efficiency. Appropriate size for use; please verify dimensions before purchase. Compatible with most machines containing the number 400 in their model number, such as F-400, FS-400, and PFS-400. Also compatible with most machines containing the number 200 in their model number, such as F-200, FS-200, and PFS-200. Type: 400 Type / 200 Type Color: Silver Material: Nickel chromium Size: 455 x 2mm / 240 x 2mm Package Contents: 10 x impulse sealer heating elements, 10 x corresponding cloth tapes Only the above package content is included; other items are not part of this package. Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement error is +/- 1-3cm.