Hot Rods. The Tilta 15mm Single Rod Holder for Camera Cage Bottom attaches to your cage with a screw, and it has a locating pin that helps prevent the holder from rotating without overtightening it on your cage. Though designed to attach to the bottom of Tiltaing BMPCC 4K full and half cages, the holder is also compatible with other Tiltaing cages with 1/4"-20 screw mounting and locating pin divot. Made from aluminum alloy with a black finish and stainless steel, this rod holder is an excellent option for adding a 15mm rod clamp to your camera’s cage.