The D'Addario Pro-Winder features a built-in cutter of high quality made from hardened steel, which easily cuts even the thickest bass strings, eliminating the need for additional pliers. The winding crank is designed to fit most tuning pegs on the market, offering smooth rotation without scratching the headstock. Additionally, the special notch at its base allows for the safe removal of pins from the bridge of an acoustic guitar without risk of damaging the wood, making it the most complete accessory for every musician.