The C100 Junior Pipe Clamp has a built-in 28 mm/1 1/8 in receiver. Capable of handling all junior pins, this gravity cast aluminum clamp has a Tommy Bar locking handle and requires no tools when attaching to truss or pipe grids. This clamp has a capacity of 250 kg/551.2 lbs., the jaws clamping range is from 20 mm - 55 mm/0.78 - 2.16 in and has an added safety cable with pin to secure junior pins. Recommended Accessories: C155, E200, C4461-1, C590, C4485, C822, C820, C888UH, C500, C150