Abstract: A wrench extension tool having a gear train of intermeshing idler gears contained within an inner housing formed of two (2) curved and substantially parallel plates. Aligned pairs of bores are provided through the parallel plates providing residence for axle pins about which the idler gears rotate. At each end of the wrench extension tool is a socket opening in which there resides an end gear. Each end gear includes a journal portion extending therefrom with the socket opening serving as bearings for such journals. Each end gear includes a hexagonal socket receptacle into which interchangeable driven and drive sockets can be inserted by a user. A locking mechanism is provided to retain the chosen drive and driven sockets in the socket receptacles. In such manner, a relatively narrow wrench extension tool is provided where either end of the wrench extension tool can serve as the driven end and either end can serve as the drive end.

Abstract: A gasket for use with exhaust systems having at least one header flange and an exhaust pipe flange joined thereto. The gasket includes an inner annular sealing ring like member deformable under pressure mounted on an outer annular metal retainer ring sized to be mounted at a flange junction between said header flange and said exhaust pipe flange. The inner ring has an outside diameter slightly greater than the inside diameter of the inner ring to deformably support the inner ring on the outer ring. The outer ring inside diameter is greater than the inner diameter of the flange junction to permit the inner ring to be compressed upon forming the junction. The inner ring is formed from a non-asbestos fiber fused with spiral wound metal wire. It is preferred that the non-asbestos fiber is an aramid fiber and the spiral wound metal wire is stainless steel. The thickness of the inner ring is at least twice as thick as the thickness of the outer ring.