Materials for Glassblowers Materials For GlassblowersTOOLSSheers, Claw Grabbers, Graphite & Brass Reamers & Paddles, Joint Holders/Formers, Glasses, Etc... COLOURBorosilicate Rod, Tubing, Vac Stack, Dicro, Opals, Murrini, Etc... CLEARBorosilicate & Quartz Tubing, Rod, Joints, Threads, Flanges, Plates, Etc...