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.