will this fit my Dremel 3000 rotary drill?

YES, collet nuts are the same size for all Dremels and other brand rotary tools such as Milwaukee.

Can this be used on the Dmel 7300

I am not sure, but I think so. The product description states the ones it does not work with, and the 7300 is not on that list. It fits my Black and Decker, and the various colletts allow for me to use just about any accessory made for any rotary tool, and also twist drill bits. I hope this helps

Will these work in the 4200 with the "EZ Change" system?

I own a basic 2 speed dremel so I can't answer with 100% assurance but my guess is NO. At the very least, the collet "nut" that is supplied will not work on your unit (is in fact replaced by the EZ change system). Also, the dremel website says the EZ402 mandrel is for use with "...exclusive EZ lock accessories.".

regarding the nut's threads, do they begin at the edge, or 1/2" down inside (on the end you screw on with)??

They begin 1/2" down If you are talking about the nut with the female threads.

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Dremel 482 1/16" Collet

Product ID: 738324284

Details

Brand
Dremel
Compatible Devices
Drilling
Item Diameter
0.13 Inches
Item Weight
0.02 Pounds
Material
Metal

🔩4 precision collet sizes

⚙️Keyless manual lock for quick changes

🛠️Universal fit for all Dremel rotary tools

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Description

🔧 Upgrade your rotary game with precision and speed!

DURABLE METAL BUILD - Crafted from high-quality metal for long-lasting performance and reliable grip during high-speed rotations.
EFFORTLESS BIT CHANGES - Hand-tightened, keyless collet nuts let you swap bits in seconds, keeping your workflow smooth and uninterrupted.
SEAMLESS COMPATIBILITY - Works flawlessly with all Dremel rotary tools and even Bosch models—never worry about tool mismatch again.
TRUSTED BY PROS WORLDWIDE - With over 6,900 glowing reviews and a top 10 rank in Compact Router Drill Chucks, join the community that demands precision.
PRECISION FIT FOR EVERY BIT - Includes 4 collets (0.8mm to 3.2mm) to handle your smallest to largest bits with unmatched accuracy.

The Dremel Collet Set 4485 includes four precision-engineered collets (0.8mm, 1.6mm, 2.4mm, 3.2mm) designed for universal compatibility with all Dremel rotary tools and select Bosch models. Featuring a durable metal construction and a keyless, hand-tightened locking system, this set ensures quick bit changes and stable, accurate grip for professional-grade performance.

Specifications

ASIN	B00004UDHU
Amazon Bestseller	#83,181 in DIY, Tools & Garden ( See Top 100 in DIY, Tools & Garden ) #14 in Compact Cutter Router Bits
Brand	Dremel
Brand Name	Dremel
Capacity	0.06 Inches
Compatible Devices	Drilling Machine
Country of Publication	USA
Customer Reviews	4.3 out of 5 stars 6,973 Your Review
Global Trade Identification Number	00080596004828
Handle Type	Hand tightened
Included Components	Electric Tool Accessories^Router Bits & Accessories^Root Turquoise
Item Diameter	0.06 Inches
Item Type Name	Electric Tool Accessories
Item Weight	0.3 Ounces
Lock Type	Manual (keyless)
Manufacturer	ドレメル
Manufacturer Part Number	482
Material	Plastic
Material Type	Plastic
Model Number	482
Thread Size	1/4-20 UNC
UPC	080596004828
Unit Count	1 Count

Reviews

A**ー

作業の幅が広がった！

これのおかげでビットのサイズを気にしなくなりました！重宝してます^_^

9.02.2026

ヨ**ナ

やはり、メ―カ―純正の品質です。

ボッシュにも使えるようなので、購入。 ◎ コレットの加工精度良い。 ◯ 軸の咥え込みの安定良い。回転軸物は、精度が出てて、何歩です。ちゃんとしている。お勧めです。

7.12.2025

山**司

とても精密

手に入らない物だと諦めて改良して使っていましたが､アマゾンさんで本品を手に入れる事が出来て大変助かりました。今までとは比べられないほど作業がはかどりとても嬉しいです。次回も宜しくお願いします。

30.01.2026

ス**ん

素人には分かりづらい

ドレメルのルーター一式と同時に購入。このコレットという部品はサイズで色分けされていると探す時選ぶ時に楽なのにと思う。

1.12.2024

あ**あ

細軸先端工具に必須

細軸の先端工具を使用するのに購入しました。見た目とおり、期待とおりの使える商品でした。

22.12.2025

A**R

Good collet

Good product. Provides more options for accessories

27.07.2024

黒**猫

これ1セットで

ざまざまな太さのビットが使える様になる。

20.03.2026

A**S

交換用に

リューターのビットのサイズ違いを使いたかったのでこちらを選択確か初期の付属にあった筈だけど、それよりサイズもあるし予備にもなるので購入

20.04.2025

C**.

good

Arrived on time. Very nice.

12.07.2023

M**K

Alternatieve spankop

Een dergelijk alternatief voor een dremelspankop.

12.05.2026

A**R

Replacement dremmel collet

This fitted my Dremmel which is a very early model

2.11.2025

M**K

Good buy

Happy

18.01.2024

V**Y

At last!!

Found an original Dremel product...fits perfectly...though it took some time to deliver the product overall happy with the results.

29.05.2017

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$10.30

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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 USA.

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