ABN valve manual grinding tool kit 2-piece set-double-ended suction cup grinding rods, 1-1/8”, 1-3/8”, 5/8”, 3/16” inches. You correctly match the valve seat during the high-end engine renovation ; These tools include double ends with oil and UV resistant synthetic rubber cups to help you complete the final touch of the adjustment Various applications: suitable for lawn mowers, chain saws, small or large engine cars or other vehicles with 5/8 inches, 13/16 inches, 1-1/18 inches and 1- 3/8 inches (1.6 cm, 2.1 cm) , 2.9 cm, 3.5 cm) valves; total lengths of 8.9 inches and 8.3 inches (22.6 cm and 21.1 cm) make these tools even useful for installing and removing embedded fixtures or hard-to-reach mini floodlight bulbs Comfortable grip: 6.75 inches (17.1 cm) long handle provides ultimate control, reduces user fatigue and improves work efficiency; 8.9 inches and 8.3 inches (22.6 cm and 21.1 cm) total length Easy to use: remove all carbon deposits on the valves and wipe each valve, install the valve in the valve guide, firmly press the correct size suction cup on the valve head, and gently rotate the tool handle between the palms (like Try to start a fire) until a suitable finish is obtained; we recommend placing the valve grinding/grinding compound (not included) on the valve seat or valve surface (keep the compound away from the top surface of the valve to ensure proper inhalation) Package contents: 2 double-end valve grinder tools for your convenience-large 1-1/8 inches and 1-3/8 inches, small 5/8 inches and 3/16 inches; grinding/grinding compound not included Color: yellow material: plastic)