Protects strings during the starting knot by not damaging the racquet string; wide head design reduces the risk of hurting hands while tying knots. Durable construction using zinc alloys and spring steel delivers enduring strength, a long service life, and a firm, easytograsp feel. Ergonomic and comfortable to use: hand feel is delicate, with chamfers that are smoothly finished for comfortable handling. Reliable threading tool: commonly used in stringing work, this clamp holds the racquet string securely during threading tasks. Use scenarios Home restringing or hobby setup: use the clamp to start knots without damaging strings, reducing string breakage and improving knot consistency. Professional stringing or like setup: the durable zinc alloy and spring steel construction provides dependable performance across many sessions and frequent use. Field or onsite maintenance: keep in your stringing kit to securely hold strings during adjustments or knot tying, enabling quick and precise work.