Ulisem Set of 2 Hand Valve Lapping and Grinding Tools, Double-Ended Suction Cups 1-1/8", 1-3/8", 5/8", 3/16"

General Description This set of two hand valve lapping and grinding tools is designed for a perfect fit of the gas valve seat during high-end engine rebuilds. The double-ended suction cups are made of UV-resistant synthetic rubber, allowing for effective final wetting of the fitted part. These tools are suitable for a variety of valves, including those on lawnmowers, chainsaws, and cars, with dimensions of 5/8", 13/16", 1-1/8", and 1-3/8" (1.6 cm, 2.9 cm, 3.5 cm). Their ergonomic design ensures a comfortable grip and efficient use. Technical Specifications: Overall Length: 8.9" (22.6 cm) and 8.3" (21.1 cm) Cup Sizes: 5/8", 13/16", 1-1/8", 1-3/8" (1.6 cm, 2.9 cm, 3.5 cm) Instructions: To use these tools, remove any carbon deposits from the valves and wipe them clean. Install the valve in its guide, firmly press the appropriately sized cup onto the valve head, and gently rotate the tool handle between your palms until a suitable finish is achieved. It is recommended to apply lapping compound (not supplied) to the valve seat or surface, taking care to keep the compound away from the top surface of the valve to ensure proper inhalation.