The DR STRINGS BKB45 Extra Life Black Beauties Coated Bass Strings are one of the finest handmade bass strings on the market.  Before winding the wire is pre-coated with a corrosion inhibitor which gives you extra protection and a longer life for your strings.  The DR STRINGS BKB45 is an exceptional coated string that doesn't sacrifice the tone, clarity, or volume.  Get yours today at Alto Music!