材料:增强树脂嵌铁成型“V闸”臂长:110mm标准颜色:黑,彩色闸皮长度:55-70mm调整范围:20.5-35.5mmMaterial:reinforced resin V-brake with steel insertArm length:110mmStandard color:black,colorRubber pad:55-70mmDimension:20.5-35.5mm