Wrench is needed to install pins.
Clamping bushes (.008-.281″) are made of brass, clamping bushes (.281-1.010″) are made of aluminum.
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3M 13627, 947, Hookit Disc Pad Holder, 7 in x 1 in x 5/8 in 5/8-11 Internal, 7000028353
Insize 7341-8S, PIN GAGE HANDLE (with 1pc handle and 4 pairs of collecting bushes), .406-.465", 6928640370632 