DR Strings Dimebag Darrell Signature Series: Hi I'm Rosa Dazza with DR handmade strings. I'm here to introduce to you another line of guitar string. These are amazing, heavy metal strings. So if you like to rock out, and you like really really bright strings, I recommend the dimebag Darrell signature series. They’re nickel plated on a hex core. They’re awesome and give you that really nice bang.