SMALLRIG Shoulder Support Baseplate for Canon EOS C100/C100 Mark II/C300 Mark II/for Sony FS7 FS5 with LWS 15 mm Rod Clamp - 1740 SmallRig Baseplate for Canon EOS, C100 Mark II,C300 Mark II, FS7 1740 is the baseplate of SmallRig 1703. It provides 1/4 and 3/8 holes on the bottom for mounting a cage onto a tripod or any other plates, the 15mm LWS clamp can hold a pair of 15mm rails for follow focus or matte box attaching. It also fits for Sony FS7 and any other cameras.