The AS1 is a unique articulated shank. Designed to permit changing/substitution of materials.
The AS2 is formed from 0.8 mm stainless steel wire and is suggested for hooks #6 and smaller. It is available in four lengths; 0.75", 1.0", 1.5", and 2.25".
The AS1 is formed from 0.9 mm stainless steel wire and is suggested for hooks #6 and larger. It is available in four lengths; 0.75", 1.0", 1.5", and 2.25".