The Spring T-Bolt Clamp 3-9/16 - 3-7/8 is designed to eliminate "cold flow hose leaks" by automatically adjusting diameter for hose compression set or expansion/contraction of hose and fittings due to temperature changes. This clamp is recommended for bus, truck, and heavy-duty equipment air intake and coolant connections. It features a 300 series stainless steel band, floating bridge liner, and trunion, as well as a yellow dichromate-plated steel bolt, spring, washer, and 1/2" locknut. These clamps meet applicable SAE J1508 requirements and are sold individually, fitting most makes and models.