Kupo 6 in 1 nesting apple box set features a space-saving design advantage that pancake, quarter and half apple boxes are able to be well stored inside the full apple box. In addition, a slot designed on both sides of 8” full apple box allows you to fix apple box on a dolly with the ratchet strap for camera mounting or a seat for cameraman. A 3/8”-16 threaded female on the center of 1” pancake apple box providing you with a mounting solution to a baby pin for a small light or other accessories. The innovative track design with the magnet on one side panel allows you to precisely slide into the storage box and snap to lock the panel within seconds. Ideal for storage and transportation.