Product Comparison: Dremel 8220-1/28 vs Dremel 8100-N/21

General Specifications
About the Product
The Dremel 8220 variable-speed cordless rotary tool kit offers the highest performance and versatility of all Dremel cordless rotary tools. The strength of its motor facilitates maximum performance at all speed levels. In fact, with its 12VMAX lithium-ion battery technology, the Dremel 8220 has a 33% longer run-time than the Dremel 8200 cordless rotary tool when cutting screws.
The Dremel 8V Lithium-ion Cordless rotary tool is the tool for people who are passionate about hands-on projects around the home such as finishing, intricate sanding, polishing, cleaning, engraving and more. The tool's variable speed control allows you to set the speed of the tool to match a particular accessory to the task at hand.
Key Specs
Accessory Change System
EZ Twist Nose Cap
EZ Twist Nose Cap
Min. No Load Speed
5000 rpm
5000 rpm
Max. No Load Speed
35000 rpm
33000 rpm
What customers say about "Key Specs"
Dremel 8220-1/28 Cordless Rotary Tool
  • Separate power and variable speed switch. Variable from 5-30k.
  • EZ twist collet lock (no need to carry around wrench).
  • It has low level variable speeds which are very nice for especially slow and deliberate work.
  • I like this unit for the power/speed, which is fully adjustable via a slider switch.
  • I use this at work to grind dog's nails. I am able to set the speed where I need it and then turn the tool on/off at the separate switch. This is a huge time saver!
Dremel 8100-N/21 8-Volt Max Cordless Rotary Tool
  • Variable speed so you can slowly work up speed without scaring your dog
  • This is a great tool. Has much the same heft and balance as the corded tool but without the hindrance of the cord. Plenty of power & speed.
  • Fantastic for dog nails...can't wait to play with other tools!! Battery holds a life for long tome! So glad I got the variable speed!!
  • Great for dogs of any size since the speeds are easily adjustable while working. So much better than my other 2 older Dremels.
  • I have a corded Dremel that is great for relatively heavy-duty rotary work, but needed a lighter cordless unit for quick lower-speed work.
Size & Weight
6 in.
8.5 in.
3 in.
2 in.
2 in.
2 in.
3.53 lbs.
0.9 lbs.
What customers say about "Size & Weight"
Dremel 8220-1/28 Cordless Rotary Tool
  • Portable, enough power, light weight for hobbies and small fix it jobs.
  • Nice product, moderate weight in your hand.
  • Nice compact tool kit! Easy to handle and work with it.
Dremel 8100-N/21 8-Volt Max Cordless Rotary Tool
  • Good size considering the power
  • The size of the tool is bigger than what I expected and am not liking that.
  • The small size of this unit is perfect.
  • Light weight and maneuverable. Easy to use.
  • However, the extra weight might take a little getting used to.
Speed Power Selection
2.4 - 5.4 m/s²
Accessories Included
Multipurpose cutting bit, 1/4-inch Fiberglass-Reinforced Cut-Off Wheel, Aluminum Oxide Grinding Wheel, 5/8-inch Aluminum Oxide Grinding Stone, 4x Felt Polishing Wheel, 4x Emery Polishing Wheel, Polishing compound, 4x 1-inch Felt Polishing Wheel, Coarse 1/2-inch Sanding Drum, 2x 1/2-inch 60 Grit Sanding Band, 3x 1/2-inch 120 Grit Sanding Band, 3x 1/2-inch 240 Grit Sanding Band, 2x Mandrel
3x 540 1-1/4-inch Cut-Off Wheel, 84922 Silicon Carbide Grinding Stone, 932 Aluminum Oxide Grinding Stone, 952 Aluminum Oxide Grinding Stone, 403 Bristle Brush, 2x 414 Felt Polishing Wheel, 421 Polishing Compound, 407 1/2-inch Drum Sander, 3x 408 1/2-inch 60 Grit Sanding Band, 3x 432 1/2-inch 120 Grit Sanding Band, 2x 445 1/2-inch 240 Grit Sanding Band, 401 Mandrel, 402 Mandrel
Separate on/off switch and speed control retains speed setting for the perfect speed every time, EZ Twist™ nose cap with wrench for fast accessory changes, Cool-running ball bearing construction for smooth and quiet operation, Comfort grip housing for easier handling and better control
Always ready, Lithium-Ion battery holds a charge 6 times longer than standard nickel-cadmium batteries, Comfort grip housing for easier handling and better tool control
What customers say about "Features"
Dremel 8220-1/28 Cordless Rotary Tool
  • Takes all of the dremel attachments unlike some of the smaller models.
  • Handy case that stores the 8220 and many more accessories.
  • Quick release collar is new and great feature, no more wrench to chase down.
  • One of the best feature is that it fits all my Dremel accessories.
  • The only bad point is the carrying case: I wish the case were a bit more flexible in allowing more accessories to be stored with it.
Dremel 8100-N/21 8-Volt Max Cordless Rotary Tool
  • A case and plenty of bits included
  • Perfect! Ten different speeds and easy to use. Item is as described as well as the attachments it comes with.
  • I love this Dremel! Variable speed and the speed adjustment is in the perfect spot to easily adjust the speed with your thumb.
  • Bought it for keeping our dogs nails short and manicured. Works great! The variable speed option is great.
  • The adjustable speed settings of this Dremel do not work well at all.
Power Source
Battery Type
12V/1.5Ah Lithium Ion
8 V Lithium-Ion battery
What customers say about "Power"
Dremel 8220-1/28 Cordless Rotary Tool
  • Plenty of torque and speed for grinding large dog nails. Don't waste your money on the cheaper lover voltage ones that bog down under the slightest load.
  • 12 volt separate battery and charger incase you want to have additional batteries. It is a quick charging battery taking about 1 hour.
  • Best feature is the removable battery. I can always have one on charge while I'm using it.
  • The battery holds a charge for a long time, and is fast charging.
  • I wonder if I got a dud for a battery. I can only do about 20 minutes on a medium speed before the battery dies. I am not impressed.
Dremel 8100-N/21 8-Volt Max Cordless Rotary Tool
  • Li Ion means no battery memory, longer life, shorter recharge times
  • This 8v unit is about the right power to do dogs nails , has a variable speed so you can start out slow to not scare them.
  • When I ordered this I was worried that it wouldn't have the power I needed, or the battery wouldn't last long enough. Both of those turned out to be untrue.
  • I highly recommend this unit to anyone who needs a quick and handy battery operated Dremel with some power.
Warranty / Certifications
Manufacturer Warranty
2 year(s)
2 year(s)
cUL Listed, CE, UL, CSA, ETL listed
Other Information

Price History

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