Carbonite 4 by Carbonite frames:

This frame is designed for an HS1177, full size stack and 4 inch props. All in a 145mm package.

*This is the ORIGINAL Carbonite 4 design, anywhere else apart from here will not be genuine*

A 5 inch frame that protects the FC stack.

FRX frame by Carbonite frames:

This frame is designed around the four pillars of design at Carbonite: it's Small (185mm), fast and agile (5" props), and strong (removable, keying arms). It's compatible with a Shrike PDB, for ultimate form factor, or spare main plates are available instead. 

Features:

• 4mm Carbon fibre arms with 2mm plates.
• All hardware included  
• Compatible with shrike PDB, or order an extra bottom plate and use that to sandwich the arms.
• Removable, interlocking arms, nylock nuts securing structural bolts.
• 185mm
• 5" props
• Made out of high quality, armattan carbon fibre

This is frame is a fairly difficult build, recommended for intermediate builders, or 2nd or 3rd quad.