The single stop with only one rigid stop is used for pieces over 1.75” (44.5mm) long.
The double stop with 2 rigid stops is used for small size pieces. Both are made of spring steel.
These low profile cam action clamps and stops have a holding force of 880 lbs. (3900N.) and have fingers that push the workpiece down before clamping, even on castings that have negative draft!
Ground stops are mounted with special screws to ensure high precision locating.
