The Millennium Marine Spyderlok Rod Holder will easily accommodate 4 rod heads with its 24 inch crossbar. Designed for spyder rigging, pushing or pulling crank baits and longlining. Fast or slow troll with ease. Smooth and easy pole angle adjustment and easy two knob removal. Mounting plate is flush with carpet. No more stumped toes and no tools necessary for use. The patented Spyderlok Technology insures tight secure locking angles. Exclusive height adjustable crossbar 12 - 24 inch. 360 degree rotational cross bar and 360 degree rod holder rotation Sure lock adjustments with Spyderlok teeth. Rugged design built to handle what you throw at it. All aluminum anodized construction.