Those coil is design for the CoolFire PZPulse pod,There are 3 different(0.2/0.4/0.6ohm) resistance values available to choose from DTL to MTL,each pack has 3pcs. Brand:Innokin Unit: 3pcs/pack Resistance: 0.2ohm (60W-80W) 0.4ohm (40W-60W) 0.6ohm (18W-23W) Fit for: CoolFire PZPulse pod Kit Package: Paper Box