The Iron Cobra 600 series is part of the new Iron Cobra family for 2013. Its most unique feature is a reversible cam. Called the "Duo Glide Cam", it allows simple adjustment between a true round "Rolling Glide" sprocket and an off-set "Power Glide" sprocket. Drummers can choose the appropriate action based on playing style, musical environment, and personal preference. In addition, the Iron Cobra 600 series features a newly designed bearing hinge for precise footboard action, and the "Speedo-Ring" rocker cam with a smooth ball bearing.The new Duo Glide cam makes it easy to switch between the Power Glide cam, which increases power and speed during a pedal stroke, and the Rolling Glide cam, which provides a smooth, consistent feel throughout the stroke.The Iron Cobra 600 series features the same durable double chain drive as the Iron Cobra 900 series. This double chain drive offers smooth and accurate motion in any situation.This new hinge features a brass pipe for the sleeve of the shaft, offering more precise motion and increased durability.The Iron Cobra 600 series eliminates another source of friction by replacing the traditional nylon rocker cam with the Speedo-Ring, which has a high quality ball bearing built in.As with Iron Cobra pedals, the head section of the hoop clamp rotates with the angle of the bass drum hoop so your Iron Cobra 600 series pedal stays flat on the floor.Twisting springs severely reduce pedal smoothness. Spring Tight, a clever half-moon shaped spring tension rod, keeps the spring from twisting so there's never any loss of power transmission. Tama HP600DTW Iron Cobra 600 Twin Bass Drum Pedal.