This high quality ball link for 4-40 pushrod offers smooth, secure operation with less slop. This is similar to part# hh-497, but this item has a smaller 2-56 socket cap screw. INCLUDES: One swivel ball links w/4-40 self-threading shank (.997" long) One 2-56x1/2" socket head cap screws (black) One 2-56 nut (Silver) One beveled spacer .084x.186x.081 (ID x OD x thickness) (brass) REQUIRES: 5/64" allen wrench for socket head cap screws 3/16" wrench for the nuts4-40 threaded pushrod