Newport/ORIEL Rail Carrier (standard 1/4 tripod holes, for 2" rails). (Similar to M-CXL48-50)
Description: It is 3"x3,5" (76x89mm). Three big holes are classic photographic tripod 1/4" mount. It holds 47-51mm rails (2"). It has little metal marker at the side to help positioning. Locking screw is metal with plastic (spring-retracting) tip to avoid damaging your rail. All little holes that you see are typical M3 (and, therefore, threaded). High quality stuff.