VALVE SEAT TOOL KIT HIGH CARBON STEEL CUTTER. VINTAGE BLOCK HEADS HQ. Milling in the following sizes. At 45 DEGREE + 90 DEGREE. 1-7/8 – 45 DEG. 1-3/4 – 45 DEG. 1-5/8 – 45 DEG. 1-1/2 – 45 DEG. 1-7/16 – 45 DEG. 1-3/8 – 45 DEG. 1-5/16 – 45 DEG. 1-1/4 – 45 DEG. 1-3/16 – 45 DEG. SEAT BORE CUTTERS – 20 DEGREE. 1-3/4 – 20 DEGREE. 1-1/2 – 20 DEGREE. 1-1/4 – 20 DEGREE. 8 stem guide in the following sizes. 5/16″, 3/8″, 7/16″, 11/32″. 7MM, 8MM, 9MM, 10MM. Not suitable for Modern / Hardened valve seats. We ensure the product reaches you at the earliest. We are looking forward to your positive reviews and to build a long term relationship.