These dust caps are a must have for all efile users. These little silicone bad boys are sold in packs of 10 (in case you lose some, cause same). Using silicone over plastic is a longer lasting solution for not only you and your efile, but for the waste we contribute in this industry.
These are a touch smaller than their plastic counter parts and are super easy to clean. The silicone helps the dust stick better, all while being easier to slip on and off your shank so you can keep reusing them.