"do you know which grippers are better? BBE or IM?"
They are pretty much relative in quality, the only differce is in
Skew Angle, Included Angle, and the PSI for Closed, and parallel.
The BBM is relative to the IM#2, all the grippers are differenct, if you get two IM#2 the force to close them isn't going to be the same, so somtimes the BBM takes more force to close, sometimes the IM.
The BBE is relative to the IM#3,
Please Scroll Down to See Forums Below 
