Valve Hand Lapping Grinding Tool Kit 2 Piece Set Suction Cup Lap Sticks FREE SAME DAY SHIPPING FROM US Features: Heavy duty rubber suction cups. Hardwood handle. Use with lapping compound (not included) to lap valves to match valve seats. Specifices: Material: Rubber,Wood Sizes:Large – 1 1/8″ and 1 3/8″ Sizes: Small – 5/8 & 3/16″ Small: 5/8 and 3/16″. Large: 1-1/8 and 1-3/8″ Use with Lapping Compound (not included) to lap valves to match valve seats. Package Includes: 1x Large – Grip Valve Grinding Stick Lapping Tool 1x Small – Grip Valve Grinding Stick Lapping Tool .