√ Size: M4x45mm+6mm Male-Female Hex Brass PCB Motherboard Spacer Standoff for FPV Drone Quadcopter, Computer & Circuit Board√ Material: made of brass, resist rust, practical, durable and convenient for using√ Applications: perfect for the industries of communication, electroplating, office equipment, electronics, etc√ Easy to install: these standoffs are useful small tools, they are very easy to install, and bring a lot of convenience to your life√ Package includes: 10pcs M4x45mm+6mm male-female brass spacers.
eBay