Vibration Dampening Rubber Bumper Grommet Pad Fits 3/8" Hole 1/16" Thick Panel

Rubber Stoppers Round Hole Plug 21 Sizes #000 Thru #6.5, Center Hole, No Hole. 10-24 Threaded Stud Rubber Bumper 3/8" Stud Length, 1/2" Tall Pad, 1" OD Pad. Shoe Lace Slide Lock fits up to 5/16" Thick String Put Lace in Hole Lock PREMIUM.

eBay