Accessories for Tyre - Tube Valves. 1. Valve Core Housing TR CH -3 for TR -218 / TR - 618. Valve Core Housing for Large Bore Core Chamber. 2. Hexagonal Nuts of Various types such as BN-I / BN-II / BN-III, etc. 3. Rim Nuts of Various types such as LN - 10, etc. 4. Valve Caps of different types such as Key type, Dome type, Hex type Short, Hex type Long etc. 5. Various types of Plungers for English Pattern Bicycle Tube Valves.