O-Test. OHM Tester Accurate to +-0.2%. Will read from 0.01 to 9.99 ohms. Simple and easy to use with native 510 and 901/808 connectors. Extensions or adapters can be used to test other atomizers or cartomizers as well as eGo style atomizers and cartomizers. The test amperage is only 3 milliamps and will not produce heat at the coil of the atomizer or cartomizer you are testing. Requires 2 AA batteries which are not included. packed in box. Price: $7.50 Unit: each OUT OF STOCK