The Fixe Hanger Is Currently The Strongest Hanger Available. These Will Accommodate Two Carabiners, Has Three Dimples To Help Prevent Spinning And Is Cut From 4mm A 304 Stainless Or Plated Steel. It Is Important To Match The Correct Hanger Hole Size With The Bolt Size To Achieve Maximum Strength. 10mm Fits 10mm And 3/8" Bolts. 12mm Fits 12mm Bolts. 13mm Fits 13mm And 1/2" Boltstable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }