ABC 17-45 Series Reversed 2 Blade Cleaver Propeller

ABC Cleaver Series 2 Blade Reversed Propellers, .45 Bar
1.6 Inch (40.6mm) to 1.9 Inch (48.2mm) diameter props.

Shaft Size 3/16" (4.75mm) from 1516 to 2016. 
Shaft Size 1/4" (6.35mm) from 2114 and larger prop diameters.

Attention! This prop is made for boats that require a clockwise spinning prop!

As pitch increases the blade angle increases.

How the ABC numbering system works.
XXXX-XX-XX(X) XXX

For example an 1815-17-45(2) CLL breaks down like this.
1.8 is the diameter in inches.
1.5 Pitch Radio
17-RAKE ANGLE
45-BLADE AREA RATIO
(2)-NUMBER OF BLADES
CL-CLEAVER OR CP-CHOPPER
L-LEFT ROTATION OR R-RIGHT ROTATION

These also come in the opposite rotation for twin motor applications. See Product ID: abc-XXXX-17-45(2)CLL