allen type socket screw
screw socket
螺旋灯座
螺旋灯头
螺丝口灯头
螺旋口插座
螺丝料
螺口灯头
螺旋座
螺旋接管套
a screw rod for transporting bottle
absorbable inner fixation screw
Absorbable interference screw
absorbable interference screw fixation
Absorbable screw fixation
absorbed screw fixation