What's the biggest string I can use with a Grip-Lock guitar tuner?

All of our guitar tuning machines have the ability to handle string gauges up to .060" by default.

However, we can modify them to fit string gauges up to .090" (typically this would be done for only the strings that need it).

To have this service done for no additional charge, specify which tuning machines you would like modified in the "shipping notes" section during checkout.