White Wood Shaft 

BM – 1  Small felt ball | 45x30mm | 16mm white wood shaft
BM – 2  Medium felt ball | 50x40mm | 16mm white wood shaft
BM – 3  Large felt ball | 60x40mm head | 16mm white wood shaft
BM – 4  X-Large felt ball | 70 x 50 mm head | 16mm white wood shaft

Aluminum Shaft 

BM – 1A  Small felt ball | 45x30mm | 16mm Aluminum shaft
BM – 2A  Medium felt ball | 50x40mm | 16mm Aluminum shaft
BM – 3A  Large felt ball | 60x40mm head | 16mm Aluminum shaft
BM – 4A  X-Large felt ball | 70 x 50 mm head | 16mm Aluminum shaft