Velvet GARBO Double Bass strings set Garbo - they have the thickest diameter and the thickest proportion of silk core and copper winding, big volume, dark sound, these strings are the ones we usually recommend to players for jazz pizz , we also have a "Light" version with less tension: 23kgs per string instead of 25 kg The solid core highlights the particular frequencies which enable the acoustic instrument to hold its own - even against a drum set. The sound is especially distinctive for the lower-middle frequency range, offering rich harmonics that are clear and assertive with the familiar "kick" as the note begins. The Garbo strings can produce a fullness of tone and penetration which is simply unbeatable. FREE SHIPPING TO ANY EU COUNTRY