The barrel shroud acts as the spring keeper and guide rod bushing. At low rotational speeds the lubrication may not attain complete separation between shaft and bushing. The spindle bearing usually consisted of a bronze bushing. A Swiss-style lathe holds the workpiece with both a collet and a guide bushing. A bushing or rubber bushing is a type of vibration isolator. In this coupling the rubber bushing absorbs shocks and vibration during its operations. They have the original style removable/replaceable cylinder bushing. The main spindle is used with the guide bushing for the main machining operations. A double-tapped bushing is a fitting which serves as a reducer. The stud has a bushing pushed onto it that has an eccentric outer diameter. It provides an interface between two parts, damping the energy transmitted through the bushing. The molten glass is extruded to the bushing to be formed into fiber. The type of washers used with the bushing can also greatly affect the bushing's characteristics. Whether a rubber bushing can be replaced or repaired depends upon the propeller; some cannot. This version featured the removable barrel bushing and take down sequence of the Colt 1911.