The hole saws made of high-quality steel are sturdy and durable, and the fine grinding saw teeth are very sharp for fast and clean sawing, suitable for wood, gypsum board, plastic, PVC pipe, etc Specifications Material: The hole saws are made of high-quality steel, which are stronger and more durable than ordinary carbon steel ones. Sizes: 3/4 "- 19mm, 8/9" - 23mm, 1 "- 25mm, 1-1 / 8" - 28mm, 1-1 / 4 "- 32mm, 1-1 / 2" - 38mm, 4 "- 44mm, 2-1 / 8" - 54mm, 2 1/2 "- 64mm, 3" - 76mm, 3-1 / 2 "- 89mm, 4" - 102mm, 5 "- 127mm Package includes: 13 * hole saws 2 * arbors 1 * reinforcing metal plate 1 * storage box