Key Features of the Coil Master Coiling Jig V4 

• Multiple Diameter Options: The kit includes six coiling posts, allowing for coils with inner diameters of 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm, and 4.0mm. This range covers most common RBA building needs.
• Ease of Use: Users simply slip their chosen wire gauge into the appropriate size coiling post and spin the top cap to wrap the wire into a perfect micro coil.
• Wire Compatibility: The V4 introduced a wider slot that accommodates various wire types, including standard round wire, as well as flat/ribbon and other exotic wires.
• Storage and Portability: The kit includes a silicone holder to keep all the parts organized and a small carrying bag for protection and convenience.