Isub Clapton Replacement Coils by Innokin. This Innokin ISub Clapton Coils are manufactured in factories and are excellent for extracting more flavour from your e-juice. In 2014, Clapton coils made their debut in the DIY vaping community. However, Innokin has now improved upon the original guitar-wire wrapping technique to create its ISub-compatible, 0.5 Ohm vertical Clapton coils. The Innokin Apex and ISub G are among the Innokin ISub tanks that are compatible with these Clapton-style atomisers. The firing power of Innokin's 0.5 Ohm Clapton coil heads ranges from 30 to 70 Watts.