Precision-MIM Crimpable Hooks Are Easily Crimped Onto Archwire For Precise Placement In Or Outside Of The Mouth. Crimp Tubes Create A Strong, Non-Sliding Lock With The Archwire And Remain Firmly-In-Place During Treatment. Ball Hook May Be Bent For Right Or Left Applications. All Hooks Fit Round Or Rectangular Archwires Up To .018 X .025.