They have a supple hair with a piece of silicone to hold it in place on the shank and help prevent tangles, and the length of that hair has been optimised for hookbait sizes that suit the size of hook you have selected.
Korda Basix Hair Rigs Wide Gape B 6 18lb, Pack of 2, BASIX Coated Hooklink, Ready to Use, Silicone Supple Hair, Anti-Tangle Sleeve Included
Korda Basix Hair Rigs, Wide Gape Size 8, BASIX Coated Hooklink, Ready to use with silicone and anti-tangle sleeve
KORDA BASIX HAIR RIGS - READY TIED | NEW - ALL SIZES MICROBARBED/BARBLESS
Korda Basix Wide Gape Barbless Hooks: 2 | Perfect All-Round Carp Fishing Hooks | Strong X Gauge Wire | Micro Barbed Design | Black Nickel Finish | Pre-Tied Hair Rig Compatible
Korda Basix Wide Gape Hair Rigs
Korda Basix Barbed Hair Rigs Wide Gape / Carp Fishing Ready Tied Rig 4x 6 4 x 8
