About the product: 
If the hole cutter you are using often has uneven welding that causes the cutter to break teeth, high-temperature friction that burns and deforms the cutter, or a core that breaks easily, then you need to replace it with a better hole cutter. Our hole cutter set is made of high-quality alloy material, which can avoid the above problems. And there are ten different sizes of cutters in this set, which can meet your different working needs.
10PC TCT Hole Saw 16-53mm

Specifications:
Material: alloy
Color: silver
Length: 70mm
Outside diameter Size:16mm, 18mm, 19mm, 22mm, 25mm, 30mm, 35mm, 42mm, 50mm, 53mm
Chuck size:9mm (±0.2mm)
 

Features:
Durable and practical
Provide 10 Kinds of SIZE Hole Saw ,Meet Your Different Needs
Perfect for Installing Locks, Knobs in Doors and Cabinets or Drilling Larger Diameter Holes Through Desks Etc
Cuts Steel, Stainless Steel, Copper, Brass, Aluminum, Fiberglass, Formica And Other Laminates In Seconds


Appliacation:Can be used for bench drill, electric drill chuck with the use of machine tools

 

Details
Chip Removal Spring: This center drill is wrapped by a spring that helps the chips produced during drilling to discharge the chip smoothly. This will make the work more efficient.
 
Connection Shank: The connection shank at the end of the drill hole is an anti-slip, rounded triangular shape, which helps to hold in tighter when it is installed and does not slip out easily.


Packages:
10 x Drill Bit Holes

 

5PHSS Hole Saw 16-30mm
Product Features:
  • Application: Widely used for bench drill, electric drill chuck with the use of machine tools.
    5 Sizes: Hole saws in 5 sizes of diameter to meet your different needs.
    Well Packed: Each set comes with a nice storage box and a hex wrench.
    Durable and Practical: High speed steel titanium coated teeth hole saw kit for drilling precise round holes easily and quickly.
    Widely Use: Can be widely used to drill wood, plastic, steel, stainless steel, copper, brass, aluminum, bakelite and other laminated plates In Seconds and also install door lock, etc.
Product Specifications:
Material: High Speed Steel (HSS)
Type: Hole Saw Cutters
Hole Saw Diameter: about 16mm/0.62'', 18.5mm/0.72'', 20mm/0.78'', 25mm/0.98'', 30mm/1.18''
Length of Hole Saw Cutter: approx. 65mm/2.55''
Shank Diameter: approx. 9mm/0.35''  
Drilling Depth: 6mm/0.24"
Package Included: 5 x drill bits

Notes:

Please allow a slight dimension difference due to different manual measurements.
Due to the light and screen setting difference, the item's color may be slightly different from the pictures.
Package Included:
    5 x drill bits (packed with wrench and box)

Note:
This product is not easy to cut a relatively thin metal material, can be cutting within the 2-5mm
Stainless steel plate and the metal plate≤15mm