Harken 32mm Big Boat Traveler Stand-Up Toggle (1948). 
 Stand-up toggles hold blocks upright on travelers. Big Boat stand-up toggles have been modified to allow attachment of Element mainsheet blocks. Control tangs allow attachment of control blocks.
 Technical Description
     5/16 - 3/8 in
 8 - 10 mm
  1/4 in
 6 mm
  2 3/4 in
 70 mm
  7500 lb
 3401 kg
  60 mm Element doubles, triples;
80 mm Element singles; Midrange blocks;
57 mm double, triple Black Magic;
75 mm single, double Black Magic; 100 mm single Black Magic
 80 mm Element singles; Midrange blocks;
57 mm double, triple Black Magic;
75 mm single, double Black Magic; 100 mm single Black Magic
* DO NOT use Harken equipment for human suspension unless product is specifically certified and labeled for such use.