BIGBOY is available in four teeth sizes/configurations (tpi – teeth per inch): 5.5 tpi ? Extra Large/Coarse (pruning, green wood), 6 tpi – Large/Coarse (pruning, green wood), 8.5 tpi – Medium (soft wood), and 11 tpi – Fine (hard wood, bamboo). Each BIGBOY has a color-coded handle associated with the teeth configuration: Yellow ? Extra Large, Red – Large teeth, Black – Medium teeth, and Blue – Fine teeth.?