The rollers on them can lessen the stress on your strings, which allows the guitar to stay in tune longer.They also can prevent wear and tear on the strings, which results in longer string life.Compatible with electric guitar and bass.Fit for Fender Strat Stratocaster Tele Telecaster Electric GuitarGreat replacement for your broken, dirty or old string retainer.
Product SpecificationBase Size (L x W): Approx. 0.43 x 0.23 inch / 11 x 6mmTotal Height: Approx. 0.47 inch / 12mm (including the roller)Roller
Size (L x D): Approx. 0.4 x 0.2 inch / 10 x 5mm
String Spread (Center to Center): Approx. 0.27 inch / 7mmMaterial: Zinc alloy
Package Includes:4 guitar string retainers4 x Mounting screws