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.

Dremel 4485 Quick Change Collet Nut | Desertcart South Korea

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Description

⚡ Upgrade your toolkit with the Dremel 4485 — precision and speed in one quick twist!

TRUSTED BY THOUSANDS - Join over 6,800 satisfied users who rate it 4.7 stars for reliability and ease.
QUICK CHANGE EFFICIENCY - Swap accessories in seconds with the hand-tightened collet nut—no extra tools needed.
UNIVERSAL COMPATIBILITY - Seamlessly fits most drilling machines, making it your go-to accessory for any project.
DURABLE METAL CONSTRUCTION - Built from premium metal to withstand rigorous DIY and professional use.
PRECISION FIT FOR POWER TOOLS - Engineered to hold bits securely with a 0.13-inch capacity for flawless performance.

The Dremel 4485 Quick Change Collet Nut is a durable, metal tool chuck designed for 0.13-inch capacity bits. Featuring a 1/4-20 UNC thread and hand-tightened manual lock, it offers fast accessory swaps and broad compatibility with drilling machines. Highly rated by thousands, it’s a must-have for professionals and DIY enthusiasts seeking efficiency and reliability.

Specifications

Asin	B0000302Z6
Best Sellers Rank	58,600 in DIY & Tools (See Top 100 in DIY & Tools) 5,592 in Power Tool Accessories
Brand	Dremel
Capacity	0.13 inches
Compatible Devices	Drilling Machine
Country Of Origin	Mexico
Customer Reviews	4.7 4.7 out of 5 stars (6,851) 4.7 out of 5 stars
Global Trade Identification Number	00080596000196
Handle Type	Hand-tightened
Item Diameter	0.13 Inches
Item Part Number	4485
Item Weight	0.02 Pounds
Lock Type	Manual
Manufacturer	Dremel Mfg Co
Material	Metal
Model Number	4485
Part Number	4485
Thread Size	1/4-20 UNC
Unit Count	1.0 count
Upc	080596000196

Reviews

User

Replacement dremmel collet

This fitted my Dremmel which is a very early model

2.11.2025

User

good

very good

14.07.2019

User

Five Stars

great price

1.08.2015

User

Alternatieve spankop

Een dergelijk alternatief voor een dremelspankop.

12.05.2026

User

Good buy

Happy

18.01.2024

User

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

User

Buen producto

21.06.2025

User

Great Product!

fits master craft Dremel

3.12.2025

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3 weeks ago

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

₩63898

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered 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 South Korea.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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Dremel 4485 Quick Change Collet Nut

Details

Details

Description

Specifications

Reviews

Common Questions