Black Brass Shell Undrilled - 7 x 13BKS 0713 This shell size currently not available PRE drilled for lugs. Please call us for a custom quote for any work of this type. New snare drum shell made from solid 1. 2mm brass, with a black nickel chrome finish inside and out. They make a bright, powerful drum with tons of projection and a nice musical ring. They are the same shells used to make the award winning Black Hawg snare drums. These shells DO have the raised bead on the outside center.