This pushrod housing can be used with 2mm, 2-56, and 4-40 pushrods.
Dimensions: 0.187" (4.75 mm) OD x 0.120" (3.05 mm) ID x 30" long.
Made in USA
 
Used with permission, copyright ©2022 Dubro RC. Copyright ©2022 Brey Corp. t/a Hobby Works.®