Need to nip off a bit of glass - either from the sheet or the rod. Try these Leponitt Glass Mosaic Cutters. 

Economical professional cutter for mosaic glass. A slight turn of the carbide wheel brings a sharp edge to the glass as the cutting surface wears.

Size: 8" Length with 1" Wide Jaw.
Features:
- Coated handles & jaws for comfort
- Brass screw adjustment ensures proper jaw setting for running a score, but not crushing the glass.