Spyder Spyder 14pc Carbide Tip Hole Saw Kit5x faster and up to 10x more cuts than standard bi metal hole saws and effortless plug ejection by dropping out the core with the push of a button Cut more materials: cuts wood w o nails, cement fiber board, plastic, porous concrete block, brick, ceramic wall tile under hardness 6 Enlarge holes and cut at an angle with this patented universal arbor system Kit contents: 1 3 8, 1 1 2, 1 3 4, 2, 2 1 2, 2 3 4, 3, 3 1 2, 4, 4 1 4, 4 1 2, hex 10 TCT pilot