There are 2 products.
Coil Master - DIY Kit Mini
Coil Master DIY Kit Mini is compact and outdoor-friendly building kit for vapers. All tools are specially designed and of high quality made for building up your vape needs.
Eleaf - Digital Ohmmeter & Voltmeter
As simple as it gets, Eleaf's digital ohmmeter & voltmeter will make sure that you know what your ohm's are after putting your coils on before your device.