RS Bowvise Kit w/Arrow and String Level. Features a micro-adjust knob for alignment of nock and sight. Allows for hands free mounting of all accessories. Use with Nok-EZ arrow and string levels to easily set up any bow. This kit includes the Bow Vise 1 nock EZ arrow level and 1 snap on string level. Package Contents: RS Bowvise Kit This bow vise has the flexibility of tipping forward or side to side with the ability to lock in at any angle. Features a micro-adjust knob for alignment of nock and sight. Allows for hands free mounting of all accessories. Use with Nok-EZ arrow and string levels to easily set up any bow. This kit includes the Bow Vise 1 nock EZ arrow level and 1 snap on string level.