1/8" flex chuck, inner cable for flex shaft motors. Ergonomic pen design with smooth metal surface makes cutting, sanding and polishing easy, for long time use.This flexible shaft is the perfect addition for your rotary tool. Quick Connect: Easily attaches to your Dremel rotary tool. If you're a handyman, do-it-yourselfer, or handyman, turn your rotary tool into a grinder with this flexible bit. Rotary tools are incredibly versatile and this accessory gives you even more functionality. Plus, the flexible rubber non-slip shank lets you really take control of the job at your fingertips.The front handle of the flexible rod is made of plastic. The shaft connector should be connected by an electric grinder. (This soft shaft has no machine, please choose another machine). There is no need to match the electric grinder interface specifications. As long as your electric grinder or electric drill can be fixed to the size of 3.175mm, the flexible shaft can be connected.Installation is convenient and simple, just attach the connector handle to the electric grinder. Easy installation: unscrew the bonding ring, loosen the bonding nut, insert the shaft into the collet, tighten the clamping nut and screw the flexible shaft onto the rotary tool.Wide Application: The flexible shaft is suitable for fine carving, dust removal, fine polishing, sanding. It can be used with polishing kits, drill bits, wire brushes, burrs, flap wheels, mounted stones and grinding wheels. Suitable for Foredom CC, SR, SRM, SRB, TX, TXM, TXB, LX, LM, LXB motors also Grobet, ProFlex flex shaft motors.