We offer special top stops with 3 spikes for spiral zip fasteners. These top stops are also used on ready-made spiral zip fasteners. These top stops are pressed directly onto the spiral (in fact, coil or helix). The spikes penetrate through the zip fastener tape and are pushed into the plastic spiral interstices. As a result, these top stops are fixed very firmly and hold well.
We will show you step by step below how to mount these top stops on a spiral zip fastener. Needle-nose pliers and a small flat pliers will be helpful. Two videos at the bottom of this page will demonstrate the process.
The pictures below show completely installed top stops on a No. 25 spiral zip fastener with 10.5 mm chain width. The first image shows their top, the second image shows their bottom and the third image shows the slider covering the top stops when the zip fastener is closed completely.
The video below shows how to cut a No.10 spiral zip fastener with a chain width of about 6 mm and fix Sp10 top stops using professional tools.