TaylorMade Spider Blade Putter, Left Hand, 35-Inch At over 5,200 MOI the Spider Blade has the stability of a mallet in the shape of blade giving golfers better distance control on off-center hits Counterbalanced Spider Blade is 50% more stroke-stable based on overall club MOI values over a traditional putter Counterbalanced putters increase stroke-stability and golfers to swing the head smoothly and on path