SmallRig 15mm Rod Clamp 1995 is equipped with two counterbore holes and one 1/4" threaded hole. It could attach SmallRig handles 1955/1983/1984 via two M4 screws, and it could work with 15mm rod for Microphone Shock Mount 1802. In other scenario, it works with 15mm rod for Single RailBlock 860 or Mini Mounting Plate 1906 and then monitor. 1/4" threaded hole could be utilized for DIY choice, and it could attach 15mm Micro Rod 1653/1552 for monitor which could be rotated horizontally and is favorable for monitoring in different directions.