ACME 816 13 x 17-1/2 x .150 cup with 1-1/8 bore right hand propeller Model Number: ACME 816 Diameter and Pitch: 13 x 17-1/2 Cup .150 cup Blade: 4 Shaft Size: 1-1/8 Rotation: right hand The ACME 816 four blade boat propeller is known for its excellent performance and smooth ride ...ACME 816 13 x 17-1/2 x .150 cup with 1-1/8 bore right hand propeller Model Number: ACME 816 Diameter and Pitch: 13 x 17-1/2 Cup .150 cup Blade: 4 Shaft Size: 1-1/8 Rotation: right hand The ACME 816 four blade boat propeller is known for its excellent performance and smooth ride. The ACME 816 4 blade ski wake boat prop has 100% CNC accuracy and consistency. You will find the best price on ACME boat propellers here at Deep Blue Yacht Supply.