WHAT I HAVE IS WHAT I THINK IS STRAUB -FLEX OPEN-FLEX COUPLING IT DOSNT HAVE A BOX OR ANY PAPERS. NOT A NORMAL PART FOR ME SO I DONT KNOW ANYTHING ABOUT IT OTHER THAN WHATS ON THE NET. IT LOOKS LIKE THEY RANGE FROM AROUND $50 -$300 IF YOU CAN USE IT HERE IT IS
CLOSED ITS AROUND 6.25" DIA
OPENED ITS AROUND 7" +-
WIDTH IS 4.3/4"
THE RUBBER INSIDE THE UNIT IS 4.5" X 187/8" +- SEE PICTURES
THE WEIGHT IS 4.3844 POUNDS
FREE SHIPPING TO THE LOWER 48
LOC A5