What size is the shank? Will they fit a 1/4inch drill?

The shaft of the diamond bit is just a bit bigger than a 1/4 like 5/16 if that’s what you are asking. Must use a drill that is adjustable to accept the round shaft.

Will it work on an alluminum 1/8" sheet?

Hello, Diamond hole saw will not work on alluminum. Maybe carbide burr set will work on alluminum.

Can these work on wood? I have an old rusted screw that snapped off inside a chair leg.

Not likely. These bits are like a hole saw - an empty shell that cuts on the outside diameter only. Get a screw extractor bit for that size screw, chuck it in power drill, set drill to reverse and let it go into the screw and remove it automatically.

Can I use to drill hole ~ an inch or two wide on mirrored glass?

No, it not going to work. Must be a drill designed for glass.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Diamond Drill Bits Set, 10 PCS Diamond Hole Saw Set, Glass Drill Bit for Ceramic Tile Porcelain Marble Granite Stone Bottles

Product ID: 445447312

Details

Cutting Angle String
6E+1 Degrees
Cutting Diameter
40.64
Finish Type
Nickel
Material
Carbon Steel
Shank Type
Straight

💎Diamond-coated for ultra-precise cuts

🔩10 versatile sizes for every project

🛡️Corrosion-resistant nickel plating

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Description

💎 Drill with precision, power, and style — don’t get left behind!

CUT LIKE A PRO 💎 - Premium diamond coating ensures razor-sharp, high-precision drilling every time.
BUILT TO LAST 🛡️ - Upgraded carbon steel with smooth nickel plating resists corrosion and edge collapse.
TRUSTED TOP RANKED 🏆 - Ranked #5 in Hole Saw Sets with 4.4-star reviews from nearly 2,000 pros.
ALL SIZES ALL SURFACES 🔩 - 10-piece set covers 1/4" to 1-1/5" for glass, ceramic, marble, granite, and more.
STAY COOL DRILL LONGER 💧 - Water lubrication tip extends bit life and guarantees a smoother drilling experience.

The Semderm 10 PCS Diamond Drill Bits Set features premium diamond-coated carbon steel bits with corrosion-resistant nickel plating. Designed for precision drilling on glass, ceramic, porcelain, marble, granite, and more, this versatile set includes 10 sizes from 1/4" to 1-1/5". Water lubrication extends bit life and improves performance, making it a top-rated choice (#5 in Hole Saw Sets) among professionals and DIY enthusiasts alike.

Specifications

ASIN	B0B24RXXDJ
Best Sellers Rank	#6,407 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5 in Hole Saw Sets & Kits
Brand Name	Semderm
Customer Reviews	4.4 4.4 out of 5 stars (1,970)
Cutting Angle String	6E+1 Degrees
Cutting Diameter	40.64 Millimeters
Finish Types	Nickel
Item Weight	1 Grams
Manufacturer	Semderm
Material Type	Carbon Steel
Model	Semderm0001
Number of Flutes	2
Number of Pieces	10
Part Number	Semderm0001
Point Style	Diamond Point
Set Name	10 PCS Diamond Hole Saw Set
Shank Type	Straight
Surface Recommendation	Glass, Ceramic, Porcelain, Stone
Tool Flute Type	Straight
UPC	605500325624
Unit Count	10.0 Count

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