- Type: Contrabass strings, Belcanto GDAE set of 4 Thank you for viewing. These strings were used for less than a year. They are still considered usable. The strings will be shipped without the original packaging. They will be disinfected with alcohol before shipping. There are currently no frays on the strings themselves, but there are some on the orange cloth part. Please check the images. Due to work, I may not be able to respond or ship immediately. Please understand this in advance. No returns or exchanges, please.