The Opteka CBW-1 is 4.1-pound counter weight designed to stabilize and balance the CXS-1 & CXS-2 video shoulder support rigs. The CBW-1 includes bracket, four hex screws and a hex key for attachment to the CXS-1 or CXS-2. The CBW-1 may be stacked as needed (using the same bracket). A heavier camcorder or a DSLR with a large lens would require two counter weights stacked to provide the proper counter-balance. Combining the CBW-1 counter weight and the CXSB-1 system strap (not included) transforms your CXS-1 or CXS-2 into a hands-free rig.