These 6″ propellers from HQProp have a pitch of 4.3 and are made of strong poly carbonate.

Package Includes:

2 x CW 6X4.3GR-PC
2 x CCW6X4.3RGR-PC

Specifications:

Propeller Diameter: 6 inch
Pitch: 4.3
Blades:2
Material: Poly Carbonate
Weight: 4.7g
Hub Diameter:13mm
Hub Thickness:6mm
Shaft:5mm
Adaptor Rings: NO