Are a retractable wire drum brush; the Flip Outs do not have a pull rod which reduces their overall weight as compared to the Jazz Brush. These convenient and durable brushes only require a simple ‘flick of the wrist’ in order to engage the wires into a playing position. GripSure handles and an anti-slip inner sleeve mean the wires will remain exactly where you want them. Flips Outs have a standard 7/16” diameter tube with a comfortable rubber grip. The O/D diameter is just over 5/8 of an inch. The wire gauge is a standard .011 inch.