Carbide Valve Seat Cutter Kit With 34mm 30,45 60 Degree Cutter 8mm Pilot / Stem. Fast and economical valve seat restoration system. Carbide Angled Valve Seat Cutter Kit. Bicycles, Cars, JEEPs, Vintage Marine Engines. 45-degree angle cutters can be used on both sides (degree and face). The kit consists of. 3 valve cutters + 1 guide/stem. 1 guide in? 8mms.