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

Product ID: 399912995

Details

Brand
3 otters
Cutting Diameter
6 Millimetres
Finish Type
Silver
Material
Diamond
Shank Type
Straight

S/.140

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Description

Johouse Tile Hole Saw, 15 PCS Diamond Drill Bits 6-50mm Glass Hollow Core Extractor Remover Tools for Glass, Ceramics, Porcelain, Ceramic : desertcart.in: Home Improvement

Specifications

ASIN	B0778NND9D
Best Sellers Rank	#439,069 in Home Improvement ( See Top 100 in Home Improvement ) #1,512 in Hole Saws
Brand Name	3 otters
Country of Origin	USA
Customer Reviews	4.2 4.2 out of 5 stars (10,515)
Cutting Diameter	6 Millimetres
Finish Types	Silver
Item Dimensions	5.1 x 5.1 x 5.1 Centimeters
Item Weight	0.1 Kilograms
Manufacturer	diamond
Material Type	Diamond
Model Number	JOHO167
Number of Flutes	1
Number of Packs	1
Number of Pieces	15
Part Number	JOHO167
Point Style	Diamond Point
Set Name	15-Piece Set
Shank Type	Straight
Surface Recommendation	Glass
Tool Flute Type	Spiral
UPC	632096615761
Unit Count	15 Count

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S/.140

Duties & taxes included

In stock

Sold byAmazon PeruDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Peru.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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5 days ago

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