Valve Seat Cutter Kit. Honda CB 750 Four 1974 K4. 3 Angle Cut 30-45-60 Degree. VALVE RE – SEATING KIT CARBIDE TIPPED. 3 ANGLE CUT AS ORIGINAL OEM SEAT. 30 DEG 45 DEG 60 DEG. Milling in the following sizes. At 45 DEGREE + 90 DEGREE. 30 DEGREE + 90 DEGREE. Contents :- 6x cutters 30,45,60 DEGREE. 32 mm – 30 Degree Top Angle Cutter For Intake. 32 mm – 45 Degree Primary Base Angle Cutter For Intake. 32 mm – 60 Degree Inner (Throating) Angle Cutter For Intake. 29 mm – 30 Degree Top Angle Cutter For Exhaust. 29 mm – 45 Degree Primary Base Angle Cutter For Exhaust. 29 mm – 60 Degree Inner (Throating) Angle Cutter For Exhaust. 1 x GUIDE STEM 6.45 mm. 1 x VALVE GUIDE HONE REAMER 6.45 mm. Feel Free To Ask Any Question.