It is very easy to use, there is no need to tie knots on the bait, you just wind the elastic thread around the bait, up & down, then break it off.
Invisi-Thread Bait Elastic / Bait Saver – Hey Skipper
Ellllv 2 Spools 0.1mm - 0.3mm Bait Elastic Thread Sea Fishing Tying Material Stretch Invisible Line Attach Fishing Bait To Hook - Fishing Lures - AliExpress
Fishing Thread Nylon Elastic Invisible Magic Fishing Line Fishing Bait Thread 0.2 mm Length 656 Feet Per Spool Stretchy Fishing Line Clear Storage Case Fishing String : Sports & Outdoors
Yholxy 4 Strands Braided Fishing Line Wear Resistant Pe - Temu
Different Types of Fishing Line Explained
Pack of 4pcs 200m High Tensile Elastic Bait Thread Sea Fishing Bait Lure Line Bait Saver
Bait Elastic for Soft Baits, Surf Shark Fishing - Heavy or Light
Gerry's Fishing Winter Sea Tackle Catalogue 2015 by Gerrys Fishing - Issuu
JM GILLIES CATALOGUE 2021-2022 by JM GILLIES - Issuu
Recreational fishing: polymers on the first line - Plastics le Mag
1pc PJ1/2/3/4/5 High Tensile Polyester Bait Elastic Thread Spool Sea Fishing Accessories Tackle Invisible Fishing Bait Line - AliExpress