The parts include a pair of T slot nuts, studs, blot nuts and the L wrench as shown in the picture.
The picture showing the clamp set holding a cylinder block for machining.
The clamp size is defined by the top opening of the T slot table. It is the same size of the T slot nut used
if you order 2 paire, we will send you a pair of parallel blocks, 12mm X 8mm X 80mm, for free.