VALVE SEAT RESTORATION KIT. HONDA CB750 K7 1977. 3 ANGLE CUT AS OEM VALVE SEAT. 1 x 28mm seat cutter at 30 degrees. 1 x 28mm seat cutter at 45 degrees. 1 x 28mm seat cutter at 70 degrees. 1 x 32mm seat cutter at 30 degrees. 1 x 32mm seat cutter at 45 degrees. 1 x 32mm seat cutter at 70 degrees. 6.5 mm VALVE GUIDE REAMER HSS. PLEASE FEEL FREE TO ASK ANY QUESTIONS.