Black Line Rubber Dam Clampshttp://www.hu-friedy.com/fail/endodontic%7Cblack-line-instruments%7Crubber-dam-clamps

RDCM0X
Flat jaws and high bow for longer premolars.
RDCM209X
Small, flat jaws with stiff bow for lower molars.
RDCM212SAX
Slightly offset staggered jaws for odd shaped anteriors.