Noted:
1. 1 set of prop mounts include 4 pieces, matching 4 propellers separately. So don't mistake them during installation. Black metal mount for the original props with black ring (CW), and silver metal ones for the original props with silver ring (CCW) 2. The package doesn't include Phantom4 drone, propellers or other parts. Description:

Gigibon for Phantom 4 replacement parts: Propeller Mount, Metal Mounting Base Holder for Phantom 4 Blades Propellers

Phantom 4 original propeller mount is plastic,but after long time of use they crack easily. The crack may not be visible and becomes the weak point that break propeller mount eventually. This will be a critical safety issue as the propeller may come off while the drone is flying.
This metallic prop mounts for Phantom 4 are fully compatible with the original one, and can resolve the crack issue. The Product has clear advantages: Precision CNC machined; Anodizing; Aviation aluminum-alloy; not easy to aging; high temperature resistance; not easy to wear; increase of service life; avoid crash risk. So they are perfect replacements to original ones.

Package:
2x CW metal mount
2x CCW metal mount
1x 1.5mm hex wrench

• Noted: 1 set of prop mounts include 4 pieces, matching 4 propellers separately. So don't mistake them during installation. Black metal mount for the original props with black ring (CW), and silver metal ones for the original props with silver ring (CCW). The package doesn't include Phantom4 drone, propellers or other parts.
• Perfect Replacements -- The metal propeller mount is an improved replacements to original plastic propeller mount of Phantom 4. The original plastic mount is probably to crack after long time use (aging and worn out), which is critically dangerous. The metal prop mount can resist high temperature/wear/oxidation, guaranteeing your drone flying safety.
• Alloy Material -- The prop installation mount is made of aviation aluminum-alloy, durable and light. 4 pieces only weigh 5 grams.
• Good Compatibility -- The replacement mount has precision cut, 100% working with original Phantom 4 blades or other 9450S propellers.
• Money-back satisfaction guaranteed!

Noted: 1 set of prop mounts include 4 pieces, matching 4 propellers separately. So don't mistake them during installation. Black metal mount for the original props with black ring (CW), and silver metal ones for the original props with silver ring (CCW). The package doesn't include Phantom4 drone, propellers or other parts.Amusefun