For great sustain and a clear, well defined tone, there's nothing like a heavy, solid brass slide.

Cross Section

 

These beautiful slides are shorter than usual, being specifically designed for Drop D tuning, where there is no need to span the six strings. There is extra thickness at the fingertip end to add weight.

They come highly polished.

One size only:
Inside diameter is 19mm (3/4")
Length is 46 mm (1 3/4"