Duckpin bowling Duckpin bowling Duckpin bowling is a variation of 10-pin bowling. The balls used in duckpin bowling are in (12 cm) to 5 in (12.7 cm) in diameter (which is slightly larger than a softball), weigh 3 lb 6 oz (1.5 kg) to 3 lb 12 oz (1.7 kg) each, and lack finger holes. They are thus significantly smaller than those used in ten-pin bowling but are slightly larger and heavier than those used in candlepin bowling. The pins, while arranged in a triangular fashion identical to that used in ten-pin bowling, are shorter, smaller, and lighter than their ten-pin equivalents,
Bowling ball finger holes are arranged on the ball surface changes how the bowling ball moves down the lane. The drilling configuration is determined by the positions of the finger holes relative to the markings on the surface of the ball, and may also be positioned relative to the axis of rotation of a particular bowler. The axis is typically identified according to the Positive Axis Point (PAP), which marks the axis before axis migration has begun. In the United States, most bowlers only use holes intended for the middle and ring fingers of the dominant hand, as well as the thumb