Classy material: The heating element is made of nickel chromium, featuring high resistivity, low resistance temperature coefficient, high-temperature performance, 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 the old element to improve bag sealing performance during regular use. Replace the kit when the PTFE cloth shows signs of wear, discoloration, or reduced sealing effectiveness. Appropriate size for your application; please verify dimensions before purchase. Compatible with most machines that have 400 in their model number, such as F-400, FS-400, and PFS-400. Also compatible with most machines that have 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 Note: The package includes only the items listed above. Other products are not included. Lighting and display settings may cause slight variations in the color of the item shown in the image compared to the actual product. Measurement error is +/- 1-3 cm.