Secure grip and precise tension control: stable adjustment mechanism with precise rotation force control for fine tuning string tension, enhanced by an ergonomic wooden handle. Optimized winding: adapts string tension during winding and includes an integrated peg calibration function to ensure precise string settings and stable intonation. Wide compatibility: fits classical and Western guitar models; accommodates different peg sizes and layouts reliably; provides stable support during string changes without sacrificing ease of use. Efficient handling: balanced winding through an ergonomic design; faster string changes; easy mounting and reduced risk of string breakage for straightforward instrument care. Use scenarios: - Replacing strings on a classical guitar to maintain tuning stability during setup and practice. - Re-stringing an acoustic or Western guitar with varying peg configurations without needing extra tools. - Quick string changes during gigs or rehearsals with reduced risk of slippage or breakage.