Have for sale an RRS B2-ProII Screw-Release Clamp. Great condition cosmetically and works like a charm. Includes 1/4-20 machine screw and hex key.
RRS item specifics:
B2-Pro II with 1/4-20 screw - B2-Pro-II-1/4 - Kit Configuration Page
C$70 shipped and PP'd by Canada Post Normal Post or Small Packet Air to US (no tracking, but fast). If in Canada, pay by EMT and save 3%.
References here, on FM as Conner999 or Ebay as Kumara999 -all 100%