Carbide tip allows for greater heat and wear resistance than bi-metal. Provides up to 10 times greater tool life on abrasive materials. Ideal for plumbing marine and aircraft applications. Use in wood laminates fiberglass plywood and tile.Features Collection - Blu-Mol Xtreme Unique tooth geometry designed for aggressive cutting A great addition to any workshop Hole Saw Diameter - 4-1/8 in. Dimension - 3.88 x 2.5 x 3.88 in. Item weight - 1.14 lbs. - SKU: DSTL025