Cobra King Speedzone ONE Hybrid The ONE Length counterpart of the SpeedZone hybrid is designed to 7-iron length (37.50") to promote one repeatable setup and swing between clubs for more consistency and accuracy. HIGH-SPEED RAILS Hollow rails flex more than solid rails, creating a larger hot spot area for a higher launch and more ball speed. FORGED FOR SPEED The forged, high-strength, stainless steel face promotes more ball speed and higher launch across more points on the face. BETTER TURF INTERACTION Baffler Rails allow you to get yourself out of a sticky situation by improving turf interaction. The rails allow the club to glide effortlessly through tight lies, thick rough, and even bunkers. Includes matching headcover. Adjustment wrench not included.