Made from 17-4 stainless steel to add 500g to your bike over the standard spindle Positioned low and central, the spindle is the perfect place to add weight for stability on the rowdiest tracks Compatible with all 5Dev cranks. Not compatible with SRAM or any other cranks Built for 83mm BB Shell TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Model Heavy Metal Spindle Spindle Interface 5Dev Length 145mm Chainline 55mm