Packaging content: You get 20 pulse dense seal heating elements and 20 PTFE (cloth), which is enough to meet your requirements and replace The size of the element: the size of the backup and maintenance parts is about 200 mm in length and a width of 2 mm. It is suitable for most (but not all) seals marked with "8 -inch". High-quality materials: Heating elements are made of -chromium alloy, with high resistivity, good oxidation capacity, high temperature level, rapid heating, durability, and not easy to and long-term service life. Easy to operate: excluding explanation, but most machines only need a screw knife to install. When PTFE has warning or discoloration, you can try to replace the old elements with a better bag sealing function Applicable situation: Applicable to most models of 200 machines, such as F-200, -200, -200 and more machine compatibility Colour:silver Material:Metal Size:24cm Package Contents: 20 x pulse dense seal heating elements Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.