High quality stainless steel hose clamp has embossed threads (not cut) that do not perforate the clamp band and rolled, raised edges that resist damaging the fuel line. Narrow 6mm wide, clamps a range of 10mm to 16mm hose diameters. 6mm hex and phillips slot. Outrigger design prevents clamp from tilting when tightened, preventing hose damage. Fits the original style vintage fuel hoses and crossover assemblies used on carbureted models. Not intended for submersible or pressurized fuel systems.