Check the listing for details. 24-53MM Valve Seat Puller Seat Removal Maintenance Tool Valve Seat Ring Tensione. Condition: New. Listed at 99.99 USD. 53mm, 50mm, 47mm, 44mm, 42mm, 40mm, 38mm, 36mm, 34mm, 32mm, 30mm, 28mm, 26mm, 24mm. How to use the puller For a quarter or one-eighth of the Luo Mao, continue to tighten the Luo Mao. When in use, first select the size of the gasket to match or match the size of the valve seat ring, insert the valve seat ring on the cylinder head, and insert the size about 1mm or 2mm, and then select the positioning guide rod (8, 9, 12) Align the gasket sleeve on the valve seat ring, insert the positioning guide rod into the valve guide tube, tighten the lower flange, and rotate the upper flange to press the valve seat ring into the cylinder head smoothly.53mm, 50mm, 47mm, 44mm, 42mm, 40mm, 38mm, 36mm, 34mm, 32mm, 30mm, 28mm, 26mm, 24mm. How to use the puller For a quarter or one-eighth of the Luo Mao, continue to tighten the Luo Mao. When in use, first select the size of the gasket to match or match the size of the valve seat ring, insert the valve seat ring on the cylinder head, and insert the size about 1mm or 2mm, and then select the positioning guide rod (8, 9, 12) Align the gasket sleeve on the valve seat ring, insert the positioning guide rod into the valve guide tube, tighten the lower flange, and rotate the upper flange to press the valve seat ring into the cylinder head smoothly.