A weight system configured to adjust the location of the center of gravity of a golf club head comprising an adjustable weight comprising an aperture dimensioned to receive a fastener, a threaded bore formed in said sole and configured to receive a fastener, and a fastener configured to pass through the aperture of the adjustable weight and engage the threaded bore, wherein rotation of said fastener in a first direction locks said adjustable weight into a locked position, preventing said adjustable weight from rotating relative to said body, and wherein rotation of said fastener in a second direction, opposite said first direction, unlocks said adjustable weight into an unlocked position and allows said adjustable weight to rotate about said fastener, and wherein said adjustable weight can be unlocked and rotated without completely removing said fastener from said threaded bore.