Displays2go Gloss Black Acrylic Clip for Signage, Plastic Ball Joint, Tilting, Rotating, Anti-Slip Coating, Set Of 100 (RDBDPS4BLK) Anti-slip coating grips surfaces firmly Plastic ball joints tilt and rotate signs into custom positions Cardholder can accommodate materials up to 1/4-inch thick Sold in a set of 100 Displays2go SKU#: RDBDPS4BLK