This set of grenadilla wood tenon caps from Loree fit over the tenons of your oboe. They protect the cork from lint, and the case from cork grease.
They also ensure that the joints of the instrument rest snugly within the case for a more secure fit. The end of each cap is open allowing air to circulate through the joint avoiding buildup of unwanted moisture.
Although made by Loree to fit Loree oboes, these caps fit many oboes.
The dimensions of these caps are:
Upper joint cap: 17mm inner width, 20mm total cap height
Lower joint cap: 23mm inner width, 20mm total cap height