This high-quality, heavy-duty ball link for 4-40 pushrods offers smooth, secure operation with less slop.This is similar to part# hh-369, but this item has a larger diameter 3mm socket cap screw. Includes: 2- swivel ball link (Black plastic, self-threading for 4-40 rod, 1" in overall length) with a burnished brass ball pre-installed with a #4 hole in it. 2- 3mm x 18mm socket cap screw 2- brass spacer 2- 3mm steel nut Requires: 4-40 threaded pushrod