#10-32 x 1/4" x 3/8" Nylon Plastic Fine Threaded Spacers (12 pcs.)

Diameter: #10
Diameter 2: 3/8"
Length: 1/4"
Material: Nylon
Thread Size: 32 (Fine)
Style: Threaded
Type: Spacer

Box of 12.

A spacer is generally something used to create a space between two objects, often to properly position them.