Trigger Type Guitar Capos for altering the pitch of your guitar, allowing to play without changing fingering Compact & streamline design to perfectly fit in your palm, operate just with one hand Soft rubber pads for firm string tension, effectively protect the strings Aluminum alloy material for better durability, rust resistance and anti-corrosion Works well with all standard 4 to 6 string guitars, suitable for most string instruments like classical guitars, acoustic guitars, ukuleles, mandolins