This is the Hobbytech Alloy Battery Plug Soldering Jig.

This handy soldering jig holds your plugs still while you solder wires to them.

Works With:
XT60 Male & Female
T Connector
XT90 Male & Female
Mini-T
2.0, 3.5 and 4.0mm Banana Plug

For bullet connectors you are offered the following sizes: 10.4mm, 8.3mm, 7.8mm, 6.9mm, 5.8mm, 5.3mm, 5.0mm, 4.6mm, 4.3mm, 3.2mm, 2.7mm, 2.4mm