Creating an endless chain with Chain Joining Pliers 

All ball chains are like that, you can cut and splice them anywhere. You just have to make sure the pliers matches the size of the ball chain, both come in multiple sizes.

normally made in steel or stainless steel.

Hello Peter. These are call chain joining pliers.

It is a cool tools to fix roller blind chain,we sell to many to our clients too,if you need just add us WhatsApp: 008618676983824 ,Email: sales@tfchain.com www.alibaba.com/product-detail/Roller-Blind-Accessories-Connector-Tool-Jointing_1600364783055.html?spm=a2700.galleryofferlist.normal_offer.d_title.7648374cuVQa3P

www.decorquip.com/product/metal-chain-joining-pliers/

We use a lot this pliers for connecting our chains and also retail it to our clients,just add us if you want, WhatsApp: 008618676983824, Email: sales@tfchain.com www.alibaba.com/product-detail/Roller-Blind-Accessories-Connector-Tool-Jointing_1600364783055.html?spm=a2700.galleryofferlist.normal_offer.d_title.7648374cuVQa3P

No 10 www.decorquip.com/product-category/roller-blinds/roller-blind-operating-chains/