Abstract: A vise for holding a fish hook during the operation of tying a fly thereon. A shaft is secured to a stable surface, the shaft having an upper coupling integral therewith. A base head is pivotally secured to the shaft coupling, the base head having a threaded aperture disposed therethrough adapted to receive a rotatable bolt therein. The rotatable bolt extends through the base head and is secured to an intermediate housing. The intermediate housing is rotatable in a 360.degree. arc with respect to an axis through the base head. A vise assembly is pivotally coupled to the opposite end of the intermediate housing. The vise assembly is adjustable at both the forward and rearward section of the jaws permitting the mounting of very small fish hooks. The vise assembly, intermediate housing and base head provide for three-dimensional movement of the mounted fish hook to facilitate the tying of flies thereon.

Abstract: An improved carburetor air intake velocity stack for maximizing the quantity of air delivered to a carburetor. An air intake velocity stack is adapted to be coupled to the air inlet of a carburetor, the surface of the air intake stack substantially eliminating turbulance at the air intake velocity stack as well as increasing the density of air being input to the carburetor. The curvature of the intake stack provides for substantially laminar flow of the input air, the laminar flow being undisturbed by the shape of the input path.