Doesit have a pilot? What type of pilot do you need for glass?

If you make a hole the aize you are trying to make in a small plank of wood first, tou can then clamp the wood plank to the glass or ceramic you intend to cut a hole into and the wood plank will act as a guide/stabiliser. This is how I have always made precise, no wobble cuts when challenged with using a hole saw without a pilot bit in the center. Although, I do have many piloted wood hole saws that I can use to create the guide plank, so that helps. Hopefully this makes sense amd you understand the method I have explained.

Is there an available guide for this tool?

Not that I know of, I found cutting thru brick I had to take it slow. I just tipped the cutting tool slightly till I had started a slight half circle then was able to hold to start the full circle. I was very surprised that it did a nice job cutting thru the brick half at a time

How long do they last? Or how often can you use them

I bought the set for two particular diameters that I needed. I have used those to drill holes several times and they worked well. They are ideal for someone like me who needs to make several holes in tiles while renovating a bathroom. I don’t believe that they were ever intended for professional use or any use where they would be drilling many holes per day on a regular basis.

Can this cut through a mirror?

Yes, this drill bit can cut through a mirror

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3 otters Tile Hole Saw, 15 PCS Diamond Drill Bits 6-50mm Glass Tile Hollow Core Extractor Remover Tools for Glass, Ceramics, Porcelain, Ceramic tile

3 otters Tile Hole Saw, 15 PCS Diamond Drill Bits 6-50mm Glass Tile Hollow Core Extractor Remover Tools for Glass, Ceramics, Porcelain, Ceramic tile

Product ID: 257355622

Details

Cutting angle string
45 Degrees
Cutting diameter
6 millimeters
Finish type
Nickel
Material
Carbon Steel
Shank type
Straight

💎15 diamond-coated sizes 6-50mm

⚙️Nickel-plated corrosion resistance

🛠️Industrial-grade carbon steel build

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฿1867

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Description

💎 Drill like a pro, shine like a boss!

VERSATILE SIZE RANGE - 15 drill bit sizes from 6mm to 50mm to tackle any tile or glass project.
PRECISION IN EVERY CUT - Smooth, accurate surface treatment ensures flawless holes every time.
DIY RENOVATION ESSENTIAL - Perfect for professionals and home renovators needing reliable, budget-friendly tools.
EFFORTLESS HOLE EXTRACTION - Hollow core design for clean, easy removal of tile cores without damage.
DURABILITY MEETS PERFORMANCE - Industrial-grade carbon steel with nickel plating for long-lasting corrosion resistance.

The 3 Otters 15 PCS Diamond Drill Bits set offers a comprehensive range of 6-50mm sizes crafted from industrial-grade carbon steel with a nickel-plated finish for superior corrosion resistance. Designed for precision and durability, these diamond-coated hole saws deliver smooth, accurate cuts ideal for glass, ceramic, porcelain, and tile projects. Perfect for both professional renovators and DIY enthusiasts, this set combines advanced technology with affordability to ensure your drilling tasks are efficient and flawless.

Specifications

ASIN	B0778NND9D
ASIN	B0778NND9D
Best Sellers Rank	#50,232 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #91 in Hole Saws
Brand Name	3 otters
Customer Reviews	4.2 4.2 out of 5 stars (10,485)
Customer reviews	4.2 4.2 out of 5 stars (10,485)
Cutting Angle String	45 Degrees
Cutting Diameter	6 millimeters Millimeters
Date First Available	21 December 2017
Finish Types	Nickel
Included Components	NO
Is Discontinued By Manufacturer	No
Item Dimensions	5.1 x 5.1 x 5.1 centimeters
Item Weight	0.1 Kilograms
Item model number	JOHO167
Manufacturer	generic
Manufacturer	generic
Material Type	Carbon Steel
Minimum Bore Diameter	6 Millimeters
Model	JOHO167
Number of Flutes	1
Number of Pieces	15
Part Number	JOHO167
Point Style	Diamond Point
Product Dimensions	5.08 x 5.08 x 5.08 cm; 100 g
Set Name	15pcs Diamond Drill Bit Set
Shank Type	Straight
Surface Recommendation	Glass, Ceramic, Porcelain, Tile
Tool Flute Type	Spiral
UPC	632096615761
Unit Count	15 Count

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