Baby Grid Clamp (Little Ben Clamp) - Made to clamp securely on overhead grids car rigs or camera car rails for mounting light fixtures. The Baby Grid Clamp can also be inverted with the pin mounting into a Grip Head for spanning pipe between two stands. Clamp will grip 1-1/4" pipe (1.660) OD minimum diameter to a maximum of 1-1/2" pipe (1.990) OD.