Set of 2 Replacement Quick Release Plate for The Manfrotto MVH502AH, 504HD, MVK502AM, MVH502A,546BK-1, 504HD,546BK, 504HD,535K, 504HD,536K, 504HD,546GBK &hellip; Precision crafted makes changing cameras fast & easy Allows for perfect balance of most camcorders Grooved rubber pad provides traction Supplied with both 1/4 inch and 3/8 inch threads Engraved scale to help identify the optimal positions