These display clips are made of plastic which can be adjusted in size to hold each size of mounting block. The bottom clip can be opened about 1.5 inches. The panel clip is nice and sturdy, grippy enough to tilt or rotate the panel in any direction for full display. Dual clip design - (two clips) base clip for stand , cross panel clip. With the pop-up open, insert the rod through the nearest hole in the clevis, then attach the card to the rod on the other side of the POP clip panel holder. Free loading and unloading, free rotation of the top horizontal clip. Wide application: the clips can be used as price and merchandise displays in store, supermarket or other shopping malls, display stands and displays for advertising purposes, displaying notes, reminders and photos at home or in the office, etc. Strong clamping force: two non-slip mats inside the clip, no need to worry about moving the clip. With a super clamp opening, the rotating clip allows you to adjust it to an optimal position, easy to clamp, rack or shelf. Suitable for cylindrical objects, plates, square tubes, partitions, round tubes, etc. Suitable for displaying prices combine the clip-on sign with any sales sign, policy sign or other card offered by supply stores, shopping malls, supermarkets, fruit shops, retail stores and warehouses that attract customers.