VERSATILE EXTENSION CHEESE PLATE: Equipped with 1/4’’-20, 3/8’’-16 ARRI style threads on the extension plate, it is useful for DIY camera mount. 18MM LONG COUNTERBORE: Secured tightly on any cage, plate with two 1/4’’ screws COMPATIBLE WITH LILIPUT 619AH, 819AH, FA1011: With M4 screw at each end of the cheese bar, it could be directly with Liliput field monitor ROUND EDGE: Friendly design on the edge to protect your hand from scratch STURDY MADE: Alumium alloy material, the cheese extension bar solid and lightweight