Chain puller: for space saving, fast and easy mounting of connecting links
By means of a chain puller the two open ends of a roller chain can be pulled together fast and easily in order to affix a connecting link, even if there is only limited space available.
The chain ends are simply put into the two blades of the sufficiently pre-released chain puller. By turning the screw, the two blades will draw closer to each other so that the chain ends have the correct distance to mount the connecting link.
Chain puller (PDF)