New Draft Gear Box

It doesn't look like much, but this wee coupler box has a lid that snaps on, which makes all the difference. You can insert the coupler, snap on the cover, and then install without it falling apart on you. It's also narrow enough to fit into a conventional cast box (from which the boss is removed), which makes it good for replacement service. Note that you can easily install the coupler upside down; this isn't all bad, as sometimes you need the lip on the bottom. Standard plastic glues work, but I recommend using a 2-56 screw for ease of maintenance.