The 3000, 4000 and 4300 tools will work with all accessories in Dremel's line that are suitable for use on a high speed rotary tool. Most of those will have a 3.2mm shank. Some (like smaller drill bits) will have smaller shanks. If you are not using a keyless chuck (#4486 sold separately) it is really important to use the alternative collet and collet nut supplied by Dremel. The collet supplied with this tool will work with accessories that are 3.2mm shank. If you require a collet that will work with a smaller shank accessory, they can be purchased separately in a full set which contains #481, #482 and #483 (#4485). Please use the collet that corresponds with the shank size of your chosen accessory.

There is no fixed answer to this question. The runtime of a Dremel cordless tool depends on the battery type, the type of application (e.g. light polishing or heavy cutting) and the tool model (Lite or 8220). Dremel have designed their tools in such a way that the average battery life of each tool is matched with the most frequent type of applications for each model.

Dremel's high performance motor will allow the tool to maintain speed under load/in use. The feature is designed to bring the tool back to the selected speed when the accessory meets the material. This will really be most noticeable at the lower and mid-range speeds. It will be undetectable in high speed applications. It is important to consider technique when using any tool that works through speed instead of torque. A tool that works as a result of torque or force is different than a high speed rotary tool. The accessory should never be forced into the material. Consider a less aggressive more frequent pass and at the lower and mid-range speeds, the tool will adjust to come back up to the selected speed.

There are 2 methods of attaching accessories to the multi-tool: Collets: There are 4 different collet sizes (0.8/1.6/2.4/3.2mm). Accessory shanks have 4 different diameters that will require the use of one of the collets. Your Dremel tool will have been supplied with the 3.2mm collet. If you purchase an accessory with a smaller shank you need to also purchase the proper collet size. The collets can be purchased as a set including all collet sizes or as individual collets. Multi chuck: If you have the Multi chuck (#4486) you don’t need to use collets, the multi chuck fits all Genuine Dremel accessories with shank sizes from 0.4 up to 3.4mm. It works like a regular drill chuck and you don’t need to tighten it more than hand tight.

It is an innovative system developed by Dremel which allows you to easily change accessories within seconds using 3 simple steps: Pull, Click and Twist. This method eradicates the use of any additional tool or wrench. The accessories can be recognized by the EZ SpeedClic logo.