Buy from Amazon : http://www.amazon.com/gp/product/B009FXAUUI?tag=scratchandsti-20 <br /> <br />Catclaw DSLR Kit Follow Focus Handle Shoulder Pad Rail Support System Rig 5D2 60D 7D <br /> <br />Focus Integrated with AB Hard StopsYou would have easy beginend setups for fast repeatable racking between two points Those focusing lenses that have no hard stops say Canon EF lenses are now easily achievable You could also pull focus anywhere as you like and easily track the previous lens position settingRails 60 mm long Rails <br />Completely gear-driven design for slip-free accurate and repeatable focusing <br />Mounts meet Standard 15 mm Rod Support 60mm center to center <br />Gear drive could be mounted from both sides <br />Suitable for industry standard 15mm rods
