Rock-Tips – Liquid Callus Formula – For Guitar, Bass, and Other Stringed Instruments – 4.0 mL sold2025 the dual-shell design provides improved

the dual-shell design provides improved durability and extra protection in the rear

and files dry and protected

protecting the loving one from the force

then you’re at the right place

more to come in the future

Rock-Tips – Liquid Callus Formula – For Guitar, Bass, and Other Stringed Instruments – 4.0 mL sold2025 the dual-shell design provides improvedRock Tips Liquid Callus Formula For Guitar, Bass, and Other Stringed Instruments 4. 0 mL Rock Tips Liquid Callus Formula is based around a medical adhesive, which is designed specifically for use on human skin. With additional polymers added for flexibility and strength, our proprietary formula acts and feels like a hardened layer of skin, with the toughness and flexibility of a real callus. With Rock Tips, you can play your instruments longer without