Maximum rated speed is 35,000rpm and overall length 107cm, expand the scope of works. Compatible with most rotary tools such as Dremel, Wen , Roybi, etc., especially suitable for dremel 7300 and dremel 3000 If you are a DIY or craft enthusiast, turn your rotary tool into a grinder with this flexible shaft accessory. Rotary tools are incredibly versatile and the soft rubber non-slip shank lets you really take control of the job at hand. Install on rotary tool, unscrew collar ring, loosen nut , insert the shaft into the collet, tighten the collet nut and screw the flexible shaft onto the rotary tool. Specifications: Weight: 250g Color: black Product Size: Length: Approx. 107cm / 42.13" Interface: M18x1.5 Widely application: The Flex shaft is suitable for fine cutting, dust removal, fine polishing, sanding, etc. This shaft flexible shaft is the perfect addition for your rotary tool Quick connect: easily attaches to your Dremel rotary tool Package included: 1x Flexible