Carbide valve seat unilateral reamer adjustable valve boring cutter valve reamer. This blade uses super hard alloy YG6X, reliable hardness, is an ideal special tool for hand tools, wear-resistant blade sharp. 15 ° 30 ° 45 ° 55 ° 60 ° 75 ° 90 ° 2 each. 5 5.5 6 6.5 7 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5. Select the corresponding valve seat cone angle blade to be repaired before use, select the appropriate valve rod, insert the blade into the hole above the corresponding appropriate knife rod, adjust the blade to the valve port cone surface according to the valve diameter size Size, screw the upper handle into the arbor, and tighten the upper handle to lock the blade. At the beginning of reaming, it should be lightly rotated for one week and then accelerated to accelerate the uniform speed reaming of the valve seat ring, which can reach the ideal working surface of the valve opening to ensure that the blade does not jump. After reaming, we can use our special CBN emery grinding wheel to grind the bright working surface. 1 set of tools.