Delrin Coupling Chain Chain Number 40 Pitch 1/2 Number of Links 12 Chain Overall Width 1.25 in For Number of Teeth 12 Overall Length 6 in Maximum Horsepower at 500 RPM 2.55 hp Includes (2) 40 Pitch 12 Teeth Sprockets Material Delrin Maximum Operating Temperature 150 Degrees F Minimum Operating Temperature -25 Degrees F Maximum Horsepower at 100 RPM 0.51 hp