The guitar string winder is made of metal for durability and practical use. Key features - Material: metal for long-lasting performance - Size: approx. 6.5 x 4 cm; compact and easy to store and manage, taking up little space - Winder head: helps replace guitar strings more easily and quickly - Feel and operation: comfortable in the hand and functions smoothly Benefits - Durable construction provides reliable, repeated use - Small, portable design fits in a toolbox, gig bag, or desk drawer - Speeds up string changes, reducing downtime during setup or practice Use scenarios - Replacing strings at home or in a studio between sessions - Quick string changes during gigs or rehearsals - Travel or on-the-go guitar maintenance in a kit This product maintains the original function and purpose of a metal guitar string winder with a compact, user-friendly design.