"The Spyder Tungsten Carbide-Tipped (TCT) Arbor for Deep Cut Hole Saws is engineered for durability and performance. With an extended 6-1/4-inch cutting depth, this arbor is ideal for drilling through stacked materials, thicker stock, and masonry. It powers through wood, PVC, fiber cement board, ceramic wall tile (up to Mohs hardness 6), brick, and concrete block. Spyder is a trusted and reliable toolmaker that specializes in creating innovative and practical solutions for maximum function on the job. With a focus on quality and functionality, Spyder understands the importance of delivering reliable and user-friendly saw blades, drill bits, and driver bits.