The Innokin Prism T20S is a basic MTL style (mouth to lung) tank with a 2ml e-liquid capacity. The T20S features Innokin's No-Spill Easy Swap coil system which enables you to install new coils without getting sticky fingers by simply sliding the coil head in and out of the base of the tank. To fill the T20S you simply need to unscrew the top cap and squirt e-liquid down the side of the tank. This tank comes with a vase style drip tip, and is compatible with other standard 510 drip tips. An alternative top cap with a slim mouth piece is also included. Compatible with any MOD with a 510 connection.