18gay亚洲男同猛男,国语自产精品视频在视频,在线a亚洲v天堂网2019无码,在线无码AV不卡毛片

■特點：
☆不通孔回轉油缸。
☆采用雙活塞，夾緊力大，行程大。
☆是杠桿式輪轂卡盤理想的動力源。
■Specificity:
☆Non-through-hole rotating hydraulic cylinders.
☆Adopting double-piston ,with large gripping force and large stroke.
☆It is the ideal power source for the lever-type hub power chucks.