Nylon Spacers Set - 230PCS Black Standoffs Spacers for Screws, Abs Round Spacer Assortment Kit Suitable for Computer Repair, Automobile Manufacturing, Door and Window Assembly,Electrical Outlet: Amazon.com: Industrial & Scientific
Everbilt 1/2 in. x 3/8 in. Nylon Spacers (2-Piece) 814948 - The Home Depot