Hillman 1.125-in Rubber Grommet in the Grommets department at

8-Pack 0.75-in Vinyl Grommet

Gardner Bender 8-Pack 0.75-in Vinyl Grommet

Pass one end of the joined connector through the hole in the stud. Snap the bushing and washer ends together. Separation of the two halves, not required.

Ideal 772271 Universal Stud Bushing, 25/Bag

Hillman 5/8 in. Inner Diameter - 1-1/8 in. Outer Diameter Rubber Grommet 55060 - The Home Depot

Stanley 24-Pack 3/8 Grommet Kit at

IDEAL 25-Pack 2.5-in Non-metalic in the Grommets department at

Hillman 5/8 in. Inner Diameter - 1-1/8 in. Outer Diameter Rubber Grommet 55060 - The Home Depot

Hillman 15-Pack Rubber Grommets at

1.125-in Chrome Steel Hole Plug

Hillman 1.125-in Chrome Steel Hole Plug

Hillman 20-Pack Nickel Plated Brass Grommets at