Self-locking Arrow (AP)

This style is shift locked in the same maner as the standard design, but will lock only in one direction.  Therefore, with this design the leading edge must always be on top or always be on bottom in order to work. Ideal for operations which are joining a wide range of materials.  It can join thin materials with reduced risk of tabs breaking off of the strip.  It can join materials up to .250″ thick. This style of stitch has four point locking, providing approximately twice the strength of the standard design.