Abstract: A clamp device for clamping first and second telescopically mounted tubes comprising a preformed bolt clamp and a saddle element. The preformed bolt clamp is of unitary and substantially rigid material and has a center portion and opposite end portions. The center portion extends completely around the outer surface of the outer tube with the end portions thereof extending outwardly from the outer tube in substantially the same direction. The saddle element generally comprises a center portion positioned between end portions which have openings formed therein to receive the end portions of the bolt clamp. The center portion of the saddle element is provided with an upwardly extending rib which not only strengthens the saddle element but also provides a contact point between the saddle and the helical bolt clamp.