These are XCS dovetail plates. They will fit XCS, GPI PRO, and some Tiffen rigs, please ask about compatibility if you’re unsure. They are not the LT or LT2 plates, and will not fit in a Betz Wave. They have 15mm holes in the front for mounting motor rods and slots in them for mounting cameras in many different positions. Used, but in very good condition. Price is for 1 plate, 2 are available. Ships via USPS flat rate box.