Valve Seat Reamer Tool Kit - Alloy Steel Universal for 20-30mm Valves, Includes 12 Sizes & 4 Heads

4 Grinding Head: Kit includes grinding head x 4, 21 x 45 degrees, 24 x 45 degrees, 26 x 45 degrees, 30 x 45 degrees, and includes 2 pieces toolholder with a rod driver,1 blind nut. Compatible: Universal for valve diameter of 20‑30mm, for example, fit for GL145 GL125 CG125 CB125T WING100; replacement for Sanyangxia Apricot ZH125 ZH125A XS125B ZH150. Easy To Use: Valve seat tool kit has a grinding head. Once hinged, it is easy to grind with a grinding head for several weeks. If there are no particles, there will be no leakage. 12 Winch: The sizes of winches are 20 x 30 degrees, 23 x 30 degrees, 22 x 58 degrees, 22 x 45 degrees, 27 x 58 degrees, 27 x 45 degrees, 26 x 30 degrees, 24 x 58 degrees, 24 x 45 degrees, 31 x 45 degrees, 31 x 58 degrees, 30 x 30 degrees. Alloy Steel: The valve seat reamer tool is constructed with alloy steel, ensuring durability, strength, and precision for reliable and efficient valve seat reaming operations.