The E-Clip tools are provided by Tomas Liu for use with his LDS servo tray kits, however the tool can be used to install any E-Clips with a 4mm outer diameter.
The E-clip installation tools make the tedious job of installing E-Clips so much easier.
There are two models to choose from. The Pro model is 4.875in long, black in color and the large handle makes it easy to use. The E-Clip tool Lite is 1.75in long, red in color, machined from aluminum and it utilizes magnets to hold the E-Clip in the tool during installation. Below is a video that demonstrates how to use the E-Clip Pro; The lite model works in a similar fashion.