Check your device instructions for which coils are best for your device. Most are interchangeable but not all. 

• DW60 - 0.6Ω Power range: 18-23W

• M2 0.6 Ohm:  Mesh 0.6ohm coil  (20-28W)

• R1 0.8 Ohm:   Regular 0.8ohm coil (12-18W)

• TM2 Coil 0.8ohms

• TR1 Coil 1.2Ohms

• TW15  0.15Ω (55-70W)
• TW20 0.2Ω (40-55W)

• VM1  DL single Mesh 0.3ohm (32-40W)
• VM3 Half-DL Single Mesh 0.45Ω Power Range：25-35W
• VM4 Half-DL Single Mesh 0.6Ω Power Range：20-28W
• VM5 DL Mesh 0.2Ω Power Range: 40-60W
• VM6 DL Mesh 0.15Ω Power Range: 60-80W

PNP X COIL SPECS

0.2ohm:

• DTL mesh coil
• Ideal for 0-0.6% freebase
• Suitable for up to 70VG eliquids

0.3ohm coil:

• DTL/RDL mesh coil
• Ideal for 0-0.6% freebase
• Suitable for up to 70VG eliquids

0.6ohm:

• RDL/MTL coil
• Ideal for up to 1.2% Freebase/nicotine salts
• Suitable for up to 70VG eliquids

0.15ohm:

• DTL Coil
• Ideal for up to 0.6% freebase
• Suitable for up to 70VG liquids