■材质： 锌合金■Matorial： Zinc Alloy ■表面处理：电镀处理(镀铬),电着涂装(黑色) ■S.Tr：Eloctroplated with chrome,Electrolyte paint,Black ■特徵：挡片可调���至关门迫紧时*佳之松紧程度,旋转把手可进行微调,充分达到防共振功能. ■Feature：Pawl can be easily positioned to accommodate the suitable compression.Turning the lever can adjust the compression,so as to prevent resonance.