Since these are the pre-installed runners, remove the side caps at the ends to insert them. TOSO Winpia curtain rail Tachikawa Blind, V17 curtain rail Fits C-shaped rails. The tire diameter is 6 mm. The diameter of the magnet runner's tire is also 6 mm. Manufacturer: Tachikawa Blind products Catalog price: VS runner 46 yen each, magnet runner 430 yen each The tires of runners wear out over time, reducing their smoothness. Why not take this opportunity? Of course, you can also use them to replenish any missing runners. It's easy to insert them into the curtain rail groove and then pull out the plastic core above. Includes 32 VS runners and 2 sets of magnet runners for a 1-meter curtain rail. The quantity is sufficient for lengths up to 80 cm. Unused items.