The Precision Marver is a solid brass marver with an aircraft aluminum base, equipped with tempered screws and heat resistant knobs. Our marver is a tabletop tool which allows for hands free use. It has adjustable sliding doors to accommodate mandrel sizes up to ¾ inch (or 19.05mm). The Precision Marver comes with your choice of either a “V” or “Radius” trough, which allows for bead shaping and tapering of various sizes to enhance your work and speed production. Beginning Lampworkers will appreciate the ability to create better shaped beads with awesome ends and the experienced Lampworker will find that they are able to create precise shapes and sizes in record time. The( Patent Pending) Precision Marver also comes with an Instructional DVD as well as a tips and cleaning information sheet.