Ultraview has designed the Contour Knob™ and Helix Knob™ to provide the archer with an extremely consitent thumb placement resulting in a rock solid shot execution! The Helix Knob™: The Helix Knob™ has been a fan favorite since 2017. At first glance the knob looks a little atypical but it works great! The peak of the ridge fits perfectly into the valley of your thumb knuckle crease. Helix Knob™ is Cerakoted for maximum durability and longevity. Works with UV Button™ or most other thumb value releases. The Contour Knob™: The Contour Knob™ has an ergonomic dished contour with non-slip spiral grooves – ensuring it fits your thumb while creating a tactile repeatable point of reference. Contour Knob™ is Cerakoted for maximum durability and longevity. Works with UV Button™ or most other thumb value releases.
