Best Coolant Drill

JINGLING 1 inch Diamond Hole Saw 25mm Tile Drill Bit Masonry Tools for Stone Pack of 2Pcs

Product Name: Diamond tip masonry bit, Stone cutting bits, Granite hole bit, Drill bits for rocks.
Excellent for making clean and accurate hole on stone, granite, marble, tile, glass.
Please add water for coolant and drill slowly.
Holes require no ruther work as cutting is clean.
NOT have center pilot drill, 5/16 inch hex shank will fit handheld or upright drillers.

Set of 21 jobber length drill bits includes inch sizes 1/16" through 3/8" in 1/64" increments.
High-speed steel (HSS) provides hardness for wear resistance.
Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material.
Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging.
Extra thick web for increased strength and rigidity compared to standard drill bits.

Set of 15 jobber length drill bits includes inch sizes 1/16" through 1/2" in 1/32" increments.
High-speed steel (HSS) provides hardness for wear resistance.
Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material.
118-degree conventional point for a range of drilling applications.
Jobber length drill bit has a midrange drilling depth suitable for general-purpose drilling applications.

Set of 29 jobber length drill bits includes inch sizes 1/16" through 1/2" in 1/64" increments.
High-speed steel (HSS) provides hardness for wear resistance.
Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material.
118-degree conventional point for a range of drilling applications.
Jobber length drill bit has a midrange drilling depth suitable for general-purpose drilling applications.

Long length drill bit has an extended flute and overall length to drill deeper and reach farther than a jobber length drill bit.
High-speed steel (HSS) provides hardness for wear resistance.
Black oxide finish reduces wear while promoting chip and coolant flow on ferrous materials.
118-degree conventional point for general-purpose drilling applications.
Round shank accommodates most drill chucks.

What you receive: you will get 12 pieces glass concrete drill bit set, with the size of approx. 6 mm, fitting your daily needs.
It can be installed in the general electric hand drill, bench drill.
The machine drill clamp range is 10 mm and above.
Reliable to use: the masonry drill bits are made of quality alloy, sturdy and reliable, anti-rust and wear-resistance.
With a reinforced head and nice hardness prevent bit cracking, it can provide a longer life.
Easy to use: designed with 1/4 inches hex shank, the carbide tip drill bit can be applied to all power tools more easily and securely, which will drill faster and smoother, saving your time and efforts.
Wide applications: the drill bit set can be applied to drilling glass, tile, ceramics, wood, marble, concrete, etc..
You should note that you have to remember to add water or coolant when drilling continuously.
Fine function: this glass and tile drill bit has a small incision and fine drill edge, the hole is smooth and complete, without leaving burrs, which will give you wonderful experience.

❶HIGH-QUALITY HARD ALLOY: The cutter head is made of cemented carbide. Hardness up to 45HRC, Triangular cutter head resistance is smaller. And it can improve work efficiency, higher hardness than ordinary drill bit, more wear-resistant..
❷EXQUISITE CRAFTSMANSHIP: The surface of the drill bit is treated by fine polishing, and the new electroplating process can prevent the drill bit from rusting and prolong the life of the drill bit..
❸10 PCS DRILL BIT SET WITH 6 DIFFERENT SIZES: 5/32” (4mm), 3/16” (5mm),1/4” (6mm), 5/16” (8mm) ,3/8” (10mm), 1/2” (12mm) fit your different needs..
❹NEW DESIGN: U-shaped drain groove, spiral handle design, easy to remove chips during work, smoother drilling..
❺WIDELY USAGE: It can be used for drilling walls, bricks, ceramic, wood, glass, tiles, stainless steel, concrete, etc. Remember to add Water or coolant when drilling..

[HIGH-QUALITY MATERIALS]: It is made of high-quality YG6X alloy as raw material. The process of oxynitride of the cutter head strengthens the drill hardness..
[SURFACE ELECTROPHORETIC PAINT PROCESS]: Full-grinding and anti-rust treatment, clean and sharp without burrs. The drill bit is more wear-resistant and more durable. Fully automated polishing: Polished CNC is fully automated, each one is unified..
[UNIQUE CROSS ANGLE DESIGN]: Small incision resistance, feature drilling stably, fast speed, not breaking the border. Opening neat, smooth, no broken edges, no tremor phenomenon, chip easily..
[WIDE USAGE]: Professional glass and tile drill bits provide smooth and accurate drilling in ceramic tiles, marble, thin iron plates, mirrors, and glass. Remember to add water or coolant when drilling..
[5/7 DIFFERENT SIZES]: Suitable for your different needs. It Can be installed in the general electric hand drill, bench drill. The machine drill clamp range is (3/4/5/6/7mm) or (3/4/5/6/8/10/12mm)..

High Speed Steel tool - 21.5mm cutting diameter. Good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance..
Reduced Shank - Expanding the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes..
Polished Finish - Polished treatment adds lubricity. Small pockets on the surface of the tool that act to hold coolant near the cutting edge..
Wide Application - Drill low and medium tensile strength materials, such aluminum, iron, copper, brass and metal. Reduced shank drill bit is widely suitable for wood processing. (Hardness of the material to be drilled should not exceed 29HRC.).
Please Note: To make clean and precise holes, water is required for lubrication and cooling when drilling metals, and the feed speed should be controlled. Increased use of water lubrication will extend drill bit life..