This Cold Steel Indian Ball Headed Club has a ball that is 90mm in diameter, a spike that is 19mm in diameter and is made of 1055 carbon steel with black oxide coating. Cold Steel Indian Ball Head Club: * Ball: 90mm diameter * Spike: 19mm diameter * Overall Length: 24" * Weight: 27.6 oz * Made of 1055 carbon steel with black oxide coating * Model# 92PBH