This contains 20 brass eyelets which go in the center of the servo grommets for mounting the servos.

SPECS: Height: 4.5mm (.17") Diameter: 3mm (.11") Inside Diameter: 2.75mm kh3-27-02 updated  

BOX DIMENSIONS: 2.50" W. X .25" H. X 2.50" L. BOX WEIGHT: .01 LBS.