Here at Marshall Radio Telemetry we machine the receptacle pieces at our own shop. We do not have the bewits available. The following video shows a great DIY option for making a simple bewit. If you prefer to have a craftsman create a well made bewit for you, see the recommended bewit makers listed below.
EZ Twist Bewits
The fastest way to fit a leg-mounted transmitter — a few one-handed twists and it's secured in place. Compatible with RT-GPS and all Marshall 1/3N battery-powered transmitters (RT Standard, RT UHF, RT Plus 2005+).
One-Handed Installation — Secure your leg-mounted transmitter in a few twists before flight — no tools needed.
Broad Compatibility — Works with RT-GPS and all Marshall 1/3N battery-powered transmitters, including RT Standard, RT UHF, and RT Plus (2005+).
Custom or Ready-Made Bewits — Pair with a custom bewit from a recommended supplier, or use Marshall's EZ Twist Receptacles to make your own.