C50LR-BR32-56-QS, Lockbolt Break-Pins (Unified), Huck, C50L Lockbolts, Style : 63253, Grade : 5, Fractional Diameter : 1 Inch, Head Capped : No, Body Material : Steel, Material Detail : Medium Carbon Steel, Finish Detail : Plain, Underhead Length to Breakpoint : 5.073 Inch (128.85mm), Drill Size : 1-1/64 Inch