The Hollywood HD-SLR Cage For Canon Cameras from Alan Gordon Enterprises is a durable, precision machined camera cage designed for use with Canon 5D Mark II, 5D Mark III, and 7D cameras. It has multiple 1/4"-20 and 3/8"-16 thread holes for mounting as many accessories as you care to support. It also features an HDMI cable protector and a hard anodized black finish. With dedicated optional accessories such as a battery mount and mini rod adapter, this rig is optimized to suit the needs of everyone from beginners to professionals.