# Best collets for the Redline Spindle **URL:** \ **Category:** Onefinity Spindle Kit by Redline CNC\ **Created:** [June 9, 2025, 9:26pm UTC](https://forum.onefinitycnc.com/t/best-collets-for-the-redline-spindle/33767 "2025-06-09T21:26:04Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![oddcarout](https://avatars.discourse-cdn.com/v4/letter/o/96bed5/32.png) [@oddcarout](https://forum.onefinitycnc.com/u/oddcarout)\ **Post date:** [June 9, 2025, 9:26pm UTC](https://forum.onefinitycnc.com/t/best-collets-for-the-redline-spindle/33767/1 "2025-06-09T21:26:04Z")
I just set up my spindle and am awaiting my tool changer. I need to acquire some collets for the ATC. They are ER20 collets, but I don’t know if I can just order them off of amazon or if there is a better place to get them. Any advice would be great. ---
**Author:** ![CMcDaniel](https://avatars.discourse-cdn.com/v4/letter/c/a698b9/32.png) [@CMcDaniel](https://forum.onefinitycnc.com/u/CMcDaniel)\ **Post date:** [June 9, 2025, 9:57pm UTC](https://forum.onefinitycnc.com/t/best-collets-for-the-redline-spindle/33767/2 "2025-06-09T21:57:55Z")
I have ordered collets off of Amazon and they were fine with one exception… One of them had some chips from the machining in the slots so they wouldn’t grab my bits properly…I was able to clear the chips and it’s fine now but take a minute to inspect them closely. FWIW, I ordered some balanced collet nuts from Avid CNC and they are very nice…really well machined and finished. Craig ---
**Author:** ![oddcarout](https://avatars.discourse-cdn.com/v4/letter/o/96bed5/32.png) [@oddcarout](https://forum.onefinitycnc.com/u/oddcarout)\ **Post date:** [June 9, 2025, 10:31pm UTC](https://forum.onefinitycnc.com/t/best-collets-for-the-redline-spindle/33767/3 "2025-06-09T22:31:31Z")
Thank you for the info Craig. ---
**Author:** ![umbert](https://avatars.discourse-cdn.com/v4/letter/u/6f9a4e/32.png) [@umbert](https://forum.onefinitycnc.com/u/umbert)\ **Post date:** [June 10, 2025, 3:02pm UTC](https://forum.onefinitycnc.com/t/best-collets-for-the-redline-spindle/33767/4 "2025-06-10T15:02:57Z")
eBay, look up this store: Hemly Tool Supply of CT They sell Techniks collets with high accuracy T.I.R of .0002" I bought ER11 for my 65mm spindle and right away you could feel the difference just buy inserting the bits, the fit is very snug. Highly recommend those if you want a premium quality. ---
**Author:** ![GarageRat](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/garagerat/32/22075_2.png) [@GarageRat](https://forum.onefinitycnc.com/u/GarageRat)\ **Post date:** [July 4, 2025, 11:29am UTC](https://forum.onefinitycnc.com/t/best-collets-for-the-redline-spindle/33767/5 "2025-07-04T11:29:37Z")
![IMG_2351](https://us1.discourse-cdn.com/flex022/uploads/onefinitycnc/original/3X/6/0/6065e93c268f4e5f7a68bb8d5734ce8829b8bc88.jpeg) My Redline spindle recently jammed up because I failed to double check the vendor’s default settings on their end mill. Augh! I am adding a couple links to this thread to assist others on their collet journey. [Avid CNC Collets and Nuts](https://www.avidcnc.com/collets-and-tool-holders-c-62_110_98.html) [Techniks Precision ER20 Collet](https://www.amazon.com/dp/B01MRRWWQX?tag=benmyers-20) [Tips by Cutting It Close on YouTube](https://youtu.be/UoHSk9dO6oM) Closing Note: Since writing this post I’ve used both collets listed here, and they each delivered excellent performance. That said, the Avid CNC collet stood out—it felt like a definite upgrade compared to the one that came with the Redline spindle. If you’re deciding between the two, I’d recommend going with the Avid CNC. ---
**Author:** ![PezWoodworks](https://avatars.discourse-cdn.com/v4/letter/p/ea5d25/32.png) [@PezWoodworks](https://forum.onefinitycnc.com/u/PezWoodworks)\ **Post date:** [July 4, 2025, 7:44pm UTC](https://forum.onefinitycnc.com/t/best-collets-for-the-redline-spindle/33767/6 "2025-07-04T19:44:57Z")
I like the collets and nuts from PWNCNC ---
**Author:** ![Gga](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/gga/32/36179_2.png) [@Gga](https://forum.onefinitycnc.com/u/Gga)\ **Post date:** [August 29, 2026, 5:30pm UTC](https://forum.onefinitycnc.com/t/best-collets-for-the-redline-spindle/33767/7 "2026-08-29T17:30:51Z")
Thanks for the tip. Pwncnc carries both standard quality and high precision collects and nuts, although currently out of the better nuts. ---
**Author:** ![joejk](https://avatars.discourse-cdn.com/v4/letter/j/aeb1de/32.png) [@joejk](https://forum.onefinitycnc.com/u/joejk)\ **Post date:** [August 29, 2026, 8:10pm UTC](https://forum.onefinitycnc.com/t/best-collets-for-the-redline-spindle/33767/8 "2026-08-29T20:10:32Z")
I use McMaster-Carr for a lot of things but they have a cheap grad (5100 tool steel $23.00) and a High end grade (Hardened Chrome-Moly Steel $57.00). Their prices are mostly fair for the stuff you can buy there. Great on line store for all kinds of tools, cabinets and just about anything you would need in a shop or business. This is just another place to get stuff and compare prices to, some stuff is reasonable and other stuff a bit pricey. > **[McMaster-Carr](https://www.mcmaster.com/1724N14/)** > > McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day. Cheers Joe