What are the three rings with Allen set screws for?

They are called carbon steel drill depth stop. Put one (of the three sizes) on the drill and tighten it with Allen screwdriver at the depth you decide.

Does it says which is for wood or metal etc?

The bits with the “fins” on the top are for masonry, paddle is for wood and sharp is for metal.

What are the sizes of the hole saw bits?

Stamped on them are: 1 1/4-32mm 1 1/2-38mm 1 3/4-44mm 2 1/8-54mm

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Amazon Basics Drill & Driver Multi Bit Set, Alloy Steel Wood Straight Drill Bits, for Metal, Wood, Plastic, Masonry, with Storage Case, 100-Piece

Amazon Basics Drill & Driver Multi Bit Set, Alloy Steel Wood Straight Drill Bits, for Metal, Wood, Plastic, Masonry, with Storage Case, 100-Piece

Product ID: 167049393

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Details

Material
Alloy Steel
Finish Type
Steel
Shank Type
Straight
Brand
Amazon Basics
Item dimensions L x W x H
10.63 x 5.12 x

🔩100 versatile bits

🧰Compact storage case

⚙️Alloy steel durability

Description

🔧 Drill like a pro, wherever the job takes you!

COMPREHENSIVE BIT SELECTION - Includes drill bits, nut drivers, hole saws, and specialty tools for every job.
MAGNETIC BIT HOLDER INCLUDED - Secure your bits instantly for faster, frustration-free work.
ORGANIZED PORTABLE STORAGE - Sturdy case keeps your entire set neatly arranged and ready to go.
ULTIMATE 100 PIECE VERSATILITY - From wood to masonry, tackle every project with precision and ease.
PREMIUM ALLOY STEEL CONSTRUCTION - Engineered for wear-resistance and long-lasting performance under pressure.

The Amazon Basics 100-Piece Drill & Driver Multi-Bit Set offers a comprehensive range of durable alloy steel bits designed for metal, wood, plastic, and masonry. Featuring 52 drill bits, 8 nut sockets, 4 hole saws, and a magnetic bit holder, all housed in a sturdy, portable case, this set is engineered for precision, longevity, and convenience—perfect for professionals and DIY enthusiasts aiming to elevate their toolkit.

Specifications

Material	Alloy Steel,Plastic
Finish Type	Steel
Shank Type	Straight
Brand	Amazon Basics
Item dimensions L x W x H	10.63 x 5.12 x 2.76 inches
Tool Flute Type	Spiral
Surface Recommendation	Wood
UPC	672352800562
Unit Count	100.0 Count
Global Trade Identification Number	00672352800562
Manufacturer	Amazon
Number of Pieces	100
Part Number	DS-DB100
Item Weight	4.04 pounds
Product Dimensions	10.63 x 5.12 x 2.76 inches
Item model number	DS-DB100
Size	100 Piece
Style	Bit Set
Finish	Steel
Item Package Quantity	1
Batteries Required?	No

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