The OConnor LWS Height Adapter is a riser that allows you to mount most rod mount follow focus units or matteboxes, such as the OConnor O-Focus or O-Box, for use with the Canon C300/C500 Cinema EOS cameras that have a taller lens center than standard. Slide the adapter into the rod supports for the mattebox, tighten in place, then the mattebox with adapter slides onto your 15mm light weight support rods; the same process applies to follow focus units.
This allows you to use your current accessories with your standard 15mm rod support system when using the C300/C500 cameras, and saves you from having to buy a whole new rod support system, mattebox or follow focus unit. The LWS adapter also features an O-Grip mount on the bottom of the unit. The adapter only mounts one accessory at a time, requiring one adapter for each accessory.