Rock-Tips – Liquid Callus Formula – For Guitar, Bass, and Other Stringed Instruments – 4.0 mL sold2025 and then use

and then use

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

Universal for Most Efile Drill Machines- the 3/32 inch(2

No stimulation to skin

Holds beads

Rock-Tips – Liquid Callus Formula – For Guitar, Bass, and Other Stringed Instruments – 4.0 mL sold2025 and then useRock 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