Box One Race V-BrakesThe Box One Brake Arms are cold forged and CNC machined from 6061 T6 aluminum. Cold forging produces the strongest, stiffest, lightest weight and most durable bicycle parts. Both sizes feature 35 millimetres of vertical brake pad adjustmentmore than most linear pull brakes. Other features include precision sealed bearing pivots, titanium and stainless steel hardware, a flexible cable noodle and streamlined cable fixing point.