The flexible shaft and the rotary tool, the flexible shaft and the grinding head must be installed and locked. 【Material】: The flexible shaft is made of high quality aluminum and plastic material, the surface is smooth and not easy to break, the aluminum connector is resistant to abrasion and corrosion, suitable for long-term work use. 42 Inch Flex Shaft Rotary Tool Before processing, test rotate the machine to make sure there is no problem before use. Dremel 4300 42 Extension Flexible Rotary Drill Tool Drive Flex Shaft Attachment Dremel Flex-shaft Attachment Suitable for jewelry design, lapidary work, hobby, crafting, modeling, repairs. Flexible & Durable Design: 42-inch long flex shaft runs up to 35,000 RPM at no load. Comfortable Grip: Ideal for detailed work like cutting, engraving, drilling... Specifications: Type: flexible shaft rotary tool 【Adequate Length】: The length of flexible drill drive shaft is 42.5 inch (1080 mm), ample length allows sanding work to be done without constraint, at the meantime, it makes polishing in different directions more flexible. Provide long-term use and service. Precision and Performance: Top Quality rotary tool flex shaft for Industrial Needs Installation process of flexible shaft: Secuity Cameas Wieless Outdoo Home System, 4 Camea Kit, No Subsciption Fees, Sola Poweed, Local Stoage, 365-Day Battey Life, 360°PTZ Suveillance, Auto Tacking, 2K Colo Night Vision Material: aluminum and plastic Size: Total length: 42.5 inch (1080mm) Color: sliver and black