All of OX DVC Coil 0.8ohm & 1.0ohm & 1.2ohm and OX Mesh Coil 0.5ohm belong to the OX platform, which can support Freemax Onnix 2 15W and Onnix 20W Pod System Kit. In another word, there are four types of OX Series Vape Coils that can be compatible with both Onnix 2 and Onnix 20W Kit.

OX DVC Coil Specifications
Freemax OX DVC Coil 0.8ohm (Included in the kit)
Dual Vertical Coil and Tea Fiber Cotton Formula
Output Power: 12W-15W
For High Strength MTL Vaping Needs (20-35mg Nic Salt/3-9mg Freebase Best)
Freemax OX DVC Coil 1.0ohm (Included in the kit)
Dual Vertical Coil and Tea Fiber Cotton Formula
Output Power: 9W-13W
For High Strength MTL Vaping Needs (30-50mg Nic Salt/6-12mg Freebase Best)
Freemax OX DVC Coil 1.2ohm (Sold Separately)
Dual Vertical Coil and Tea Fiber Cotton Formula
Output Power: 9W-13W
For High Strength MTL Vaping Needs (30-50mg Nic Salt/6-12mg Freebase Best)
Freemax OX Mesh Coil 0.5ohm (Sold Separately)
SS904L Mesh Coil and Tea Fiber Cotton Formula
Output Power: 16W-20W
For RDL Vaping Needs (3-6mg Freebase Best)