For dry / wet cutting. 4" tube length with Laser-Welded individual segments to hold up under extreme heat and cutting pressure. This dry core bit also has impregnated with silicon carbide electroplated on the outside of tube ideal for beveling and eliminates pinching and heat build up. Specially formulated supreme quality segments provide smooth and clean cutting in granite, marble, stone, tile, porcelain and similar materials. Full range of sizes for virtually any job.