Based on this product's specifications, here are some alternatives and similar models
Camera cage SmallRig 5254 — compact aluminum support, W 12.5 mm × D 96.7 mm × H 182 mm
Summary description:
SmallRig 5254 camera cage is a compact aluminum support frame designed to protect and expand camera mounting options. Dimensions are 12.5 mm (width) × 96.7 mm (depth) × 182 mm (height). The cage provides multiple mounting points for accessories, secure handling and improved rig stability for video and photo productions.