The CONSTANT TORQ CLAMP 11/16 - 1-1/4 is a top choice for bus, truck, and heavy-duty equipment air intake and coolant connections. Its patented belleville spring design automatically adjusts the diameter for hose compression set or expansion/contraction due to temperature changes, eliminating "cold flow hose leaks." The extended inner liner covers worm gear slots to protect against extrusions and damage, while the all-stainless steel construction ensures durability. With an extended adjustment range, fewer stocked parts are needed for complete coverage. This clamp is specified by many top fleets for new vehicle installations and fits most makes and models.