Description
This hole saw set is ideal for multiple concrete wall hole-opening jobs. It contains 5 different sizes of hole saws to suit your various hole-opening needs. Equipped with 3 sturdy center positioning bits to help you position the hole accurately and minimize drilling errors. In addition, it comes with two connecting rods for easy use. Whether you are doing a home renovation or professional construction, it makes work easy for you to handle.

Key Features
Premium Materials: The premium carbon steel, YG10 alloy, 40Cr, exquisite sandblasting process, and heat treatment process give the product high hardness, long service life, and excellent resistance to corrosion, wear, and rust, thus ensuring good performance for concrete hole-opening work.

Wide Compatability: The 5 sizes of hole saws (1.18in, 1.57in, 2.56in, 3.15in, 3.94in) are able to help you open different sizes of holes. In addition, two different types of 11.81-inch shafts can be matched with different types of hammer drills, which gives this set of accessories a wider range of applications.

High Working Efficiency: The triple-edged cutting hole saws and 135° tip drill bits boast more cutting power, which can easily cut into the wall and make hole-opening more efficient. In addition, each hole saw is equipped with two chip discharge holes to remove debris generated during the drilling process, ensuring smooth drilling.          
Easy to Carry and Store: The package includes a toolbox that provides specific places for storing the hole saws, shafts, and drill bits, allowing you to store them and carry them to your workplace easily.

Clean with Ease: The simple structure, detachable design, and smooth surface allow you to easily wipe the dust off and keep these products clean with a soft cloth.

Simple Assembly: With the complete accessories and simple structure, you can easily assemble them and install them on your electric hammer.

Ideal Gift: The powerful function makes it an ideal gift for your friends, colleagues, and families.

Buy with Confidence: We stand behind all our guests and look forward to assisting you with your purchase. It is our pleasure to answer your confusion and questions. The end of the story between us is not "we sell and you buy".

Details
Buckles: The toolbox has two buckles for easy opening and closing.

Rounded Edges: The burr-free and rounded edges improve the safety of use.

Clear Markings: The markings on hole saws make it easy for you to quickly find the size you want.       

Application
This set of products is mainly used for dry working. They are especially suitable for opening holes in concrete walls, hollow brick walls, cement walls, and red brick walls when installing air conditioners, water pipes, water heaters, smoke pipes, sewer channels, etc.

Assembly Steps
1. Install the center drill bit into the shaft.
2. Place the fastening screw into the shaft and tighten the screw.
3. Screw the hole saw on the shaft and screw it tightly.

Specifications
Color: Silver, Black
Material: Carbon Steel, YG10 Alloy, 40Cr
Process: Sand Blasting, Heat Treatment
Shaft Type: SDS PLUS 30cm/11.81in, SDS MAX 30cm/11.81in
Hole Saw Diameters: 3cm/1.18in, 4cm/1.57in. 6.5cm/2.56in, 8cm/3.15in, 10cm/3.94in
Each Hole Saw Height: 5cm/1.97in   
Each Center Positioning Drill Bit Size(D*H): 0.8*11cm/0.3*4.33in
Assembly Required: Yes
Package Size: 40*26*12cm/15.75*10.24*4.72in
Gross Weight: 5.2kg/11.46lbs
Net Weight: 4.94kg/10.89lbs

Package Included   
5* Hole Saws
2* Shafts
3* Center Positioning Drill Bits
1* Toolbox
Other Needed Accessories

Notes  
1.Please check the size carefully before ordering.
2.When drilling holes with an electric hammer, the screws are easily loosened due to too much vibration, so you can remove the center positioning drill bit after positioning and continue drilling.
3.Please note that this product is not suitable for drilling holes in metal, glass, wood, and ceramic tiles.
4.If there are tiles on one side of the wall, you need to first use a tile hole opener (not included) to make a hole in the tiles before using this product.
5.Please use a hammer drill, not an electric drill. Please note that our package does not include an electric hammer.