9Pcs Hole Bit + SDS Plus/Max Shank for Concrete Cement Stone Wall ø30-100mm 370mm Wall Hole Drill Bit Set Steel

Let this hole saw kit make your drilling work easier! It will not break or twist easily and can withstand more high-intensity work. Different sizes allow you to handle various drilling work. Its efficient and durable features also make it an ideal gift for DIY lovers!
Application
It needs to be used with the electric hammer. It can hit brick, adobe, foam, and concrete walls.
Installation
1.Install the center drill into the corresponding extension hole of the groove.
2.Insert the center drill into the bottom.
3.Put the fixing screw into the extension rod.
4.Tighten the set screw with a wrench.
5.Put the tapper into the extension rod.
6.Tighten the tapper and extension rod.
Specifications
Color: Black, Grey
Material: 45 # Carbon Steel, 40 Cr, YG8 Alloy
Surface Treatment: Sandblasting
Compatible Material: Brick, Cement
Number Of Pieces: 9
Diameter: 30/40/68/80/100mm
Cutting Diameter: 30-100mm/ 1.18-3.94in
Chip Flute Length: 50mm/ 1.97in
Useful Length: 50mm/ 1.97in
Total Length: 370mm/ 14.57in
Cutting Depth: 330-350mm/ 12.99-13.78in
Blade Size: 6.5mm/ 0.26in
Blade Diameter: 30-100mm/ 1.18-3.94in
Blade Length: 50mm/ 1.97in
Number of Teeth: 4/5/8/10/12 Pieces
Pipe Wall Thickness: 3.4-3.5mm/ 0.13-0.14in
Toolbox Size: 20.5*16*9.5cm/ 8.07*6.3*3.74in
Package Size: 40*26*12cm/ 15.75*10.24*4.72in
Net Weight: 5.2kg/ 11.46lbs
Gross Weight: 5.8kg/ 12.79lbs
Package Included
1* Drill Bit Ø 30 mm
1* Drill Bit Ø 40 mm
1* Drill Bit Ø 68 mm
1* Drill Bit Ø 80 mm
1* Drill Bit Ø 100 mm
2* Center Drill Ø 8 x 110
1* SDS-Plus Shank 300 mm
1* SDS-Max Shank 300 mm
1* Plastic Toolbox

Key Features
Good Assistant: This complete hole saw kit can make it easier for you to open holes. It is the ideal choice for you to home maintenance and repair! You can also give it to your father or other friends with strong practical skills.
Dual Chip Removal: The large chip removal hole and the surrounding chip removal groove can effectively prevent the chip from blocking, thus improving the drilling efficiency.
Strong Power: The three-edge cutting is sharp enough to quickly cut clean and smooth round holes up to 13.78 inches deep without adding water.
Precise Positioning: Its center drill point can accurately position for you, which is not easy to shift during operation, and improves the drilling efficiency.
Complete Accessories: To meet your different opening requirements, it is equipped with different sizes and shapes of extension rods and drill bits.
High Portability: The toolbox with a handle and lightweight (11.46lbs) make it carried anywhere you want without missing small accessories, facilitating your daily use.
Premium Material: This hole saw kit is made of high-quality 45 # carbon steel, 40 Cr, YG8 alloy, which is strong and stable to provide you with long-lasting convenience.
Customer Service: We aim to provide quality products and services. If you have any problems, please feel free to contact us. We will reply and solve the problem for you as soon as possible.
Details
Sandblasting Treatment: The sandblasting treatment improves the fatigue resistance and durability of the workpiece.
Model Mark: The hole opener is marked with a model for your easy use.
Extension Bar: The anti-slip slot and screw on the extension bar can make it firmly installed on the electric hammer so that you can use it more safely.
Thickened Pipe Wall: Its 0.13-0.14 inch pipe wall thickness can provide you with longer service life.

Notes
1.Please wear a full set of protective equipment when working with tools.
2.Please note that this product does not apply to drilling on stainless steel, steel, ceramic tile, and stone.
3.Please do not use beyond the scope of use, avoid improper operation, and non-professionals do not try to use.
4.Please note that the screws are easy to loosen due to excessive vibration during drilling with an electric hammer, which is a normal phenomenon. You can remove the center drill after positioning and continue to use it.
5.When not in use, please place it out of the reach of children.
6.The screw of the smaller hole opener (such as 30/35mm) will be a part higher than the hole opener, and the center drill can be removed after positioning to continue drilling.
7.Check the integrity of the borehole before use. When drilling, keep the drill perpendicular to the workpiece. Use a small feed force at the beginning of drilling and a medium feed force after positioning.
8.When drilling continuously, use cutting fluid to cool the cutting edge.
9.If there are tiles on one side of the wall, you must first use the tile opener to make a hole in the tile, and then use the product to make a hole. It is recommended that the tile opener is one size larger than the wall opener.
10.After drilling, if it is difficult to disassemble the extension rod, the following steps can be followed to quickly separate the extension rod and the hole opener. The greater the force, the better the effect: prepare - a spanner wrench and screwdriver; insert the screwdriver into the hole on the extension rod and clamp the wrench on the handle; Step on the wrench with your right foot and hold the middle of the extension bar with your right hand.
11.Please allow the slight color difference caused by the shooting light and 1-3 cm error due to manual measurement, and make sure you do not mind before ordering.