The Swiff K8 is a reliable, smart capo for your acoustic or electric guitar. The platform touching the strings is silicon to give a balanced sound and resonance, retaining your guitar's natural brightness and warmth. The precision spring mechanism keeps the K8 securely fastened to prevent any disruption to the strings. With a metal construction, the K8 will be robust enough to last frequent gigs and be a reliable and stylish capo for any guitar player. Total metal material Quality steel spring Perfect silicon cushion Comfortable hand-feeling Easy to grip and move fast