6.35mm dust plugs can be inserted into the 6.35mm jack and form an airtight seal to prevent dust dirt and other debris from entering the jack thus maintaining good connection quality and also preventing oxidation and corrosion extending the life of audio equipment. 6.35mm dust plugs are suitable for a wide range of audio equipment such as amplifiers microphones electronic organs guitars etc. but also for other devices that use 6.35 mm plug connection of equipment. Installing the 6.35mm dust plug is very easy just plug it into the jack no professional skills are required. Features: 1. The dust covers are easy to install and remove making them very user-friendly. 2. The rubber material used in the covers is smooth and non-sticky making it easy to wipe clean with a cloth or tissue. 3. The high-quality material used in the covers makes them resistant to wear and tear ensuring they will last for a long time. Color: Black Clear Material: Rubber Package Included: 10 x 6.35mm Dust Cover Overall Size(L*D): 13 x 10mm / 0.5 x 0.4 Notes: 1.Due to the different measure ways or tools there may exists slight deviation hope that you don t mind.