This spacer is item #11 as shown on the diagram. It's a key part of the Comet TAV2 30 Series, with a 3/4 ID design for a perfect fit.

To use this spacer, first find item #11 on the diagram. Then place it in the designated spot according to the layout. Make sure it fits snugly. When handling, be gentle to avoid any damage. For maintenance, keep it clean and dry. If you notice any signs of wear or damage, replace it promptly to ensure the proper functioning of your equipment.