Expert quality, with 0.024-0.032 karat diamond head (No.4). Stainless steel swivel head, brass shank and wooden handle. Cuts glass up to 4 mm thick. Great For Craftspeople, Hobbyists, Workmen And More. Use For Stained Glass, Windows, Glass Tile, Etc. Appx. 6 1/2″. * 6.5″ Long * Multipurpose * Cuts Glass & Tile * Great For Crafts *