VALVE SEAT RESTORATION KIT. CARBIDE TIPPED 24 PCS. Contents :- (12 pcs cutters). 1-1/4″, 1-3/8″, 1-7/16″, 1-1/2″, 1-9/16. 1-5/8″, 1-3/4″, 1-7/8 – 45 Degree. 7/8 – 30 Degree. 1 1/4″, 1 1/2″, 1 3/4 70 Degree. (4pcs) Stems metric size 7 mm, 8 mm, 9 mm, 10 mm. (4pcs)Stems inch size 11/32″, 3/8″, 5/16″, 7/16″.