螺丝钉平头十字不锈钢
滚针轴承28X36X1628X36X2028X40X18
滚针轴承K28X36X16K28X40X18K28X40X25
滚针轴承日本K28X35X27K28X36X16
德国轴承K28X34X17K28X35X16
滚针轴承K32X40X25K32X46X3230
密封圈钻机油封12x22x7