For cutting a range of different diameter holes which include the sizes of 19mm, 22mm, 29mm, 32mm, 38mm, 44mm, 51mm, 64mm, 76mm, 89mm, 102mm, and 127mm, or imperial sizes 3/4", 7/8", 1-1/8", 1-1/4", 1-1/2", 1-1/3", 2", 2-1/2", 3", 3-1/2", 4", and 5" sizes . The blades are able to cut holes up to 1 inch or 25mm in depth. The blades are made of high strength carbon steel, ideal for cutting into plastic, wood, drywall, MDF, OSB, and plywood. Those two sets of hole saws can be used for plumbers for running pipe lines, electricians for installing pot lights and switches, roofers, and do it yourself projects. 

Features:

• Two sets includes 11 plus 8 carbon steel hole saws with HSS pilot drill bits
• Hole saw sizes: 3/4in (19mm),  7/8in (22mm),  1-1/8in (28mm),  1-1/4in (32mm),  1-1/2in (38mm),  1-1/3in (44mm),  2in (51mm), 2-1/2in (64mm), 3in (76mm), 3-1/2in (89mm), 4in (102mm), and 5in (127mm) 
• Can be used for drilling thru drywall, plastic, OSB, MDF, thin aluminum and plywood
• Cuts smooth, clean and accurate holes
• Both sets includes a storage case 

Specifications:

• Brand: Tolsen
• Model: 75865, 75866
• Made of high carbon steel
• Saw blade metric sizes: 19mm, 22mm, 29mm, 32mm, 38mm, 44mm, 51mm, 64mm, 64mm, 76mm, 89mm, 102mm, and 127mm
• Hole saw imperial sizes: 3/4", 7/8", 1 1/8", 1 1/4", 1 1/2", 1 1/3", 2", 2 1/2", 2 1/2", 3", 3-1/2", 4", and 5"
• Product requirement: power drill or cordless drill
• Black PVC storage case 

Package includes:

• 11pcs hole saw kit with plastic storage case
• 8pcs hole saw kit with plastic storage case
• Retail packaging