LAIWEI 16PCS Hole Saw Set Includes 2 drill bit chucks, 1 drill bit, 1 mounting plate, and 1 hex wrench. Maximum size: 5 inches; minimum size: 3/4 inch. Suitable for use with cork, plywood, gypsum board, and PVC materials. The drill saw is made of carbon steel and heat-treated, with a yellow surface. The saw teeth are polished to form sharp teeth, ensuring sharper cutting, faster speed, rust resistance, wear resistance, and a longer service life. LAIWEI saw blades are durable and can be used on soft boards, thin PVC boards, and plastics, but are not suitable for hard boards (particleboard, computer desks, etc.). The hole saw kit includes 12 saw blades of different sizes: 3/4 inch (19 mm), 7/8 inch (22 mm), 1-1/8 inch (28 mm), 1-1/4 inch (32 mm), 1-1/2 inch (38 mm), 1-3/4 inch (44 mm), 2-1/8 inches (54 mm), 2-1/2 inches (64 mm), 3 inches (76 mm), 3-1/2 inches (89 mm), 4 inches (102 mm), 5 inches (127 mm), with a maximum cutting depth of 26 mm, 2 chucks, 1 drill bit for easy replacement, 1 mounting plate, 1 hex key, 1 storage box. Very convenient for storage and easy to carry.