Dremel Quick Change Rotary Tool Collet Nut Set changes bits quickly without the use of a wrench, making your work more efficient and convenient. This set provides better visibility of the workpiece, allowing for more precise and accurate results. Designed for use with all moto-tools, it includes a collet nut and four collets sized 1/8", 3/32", 1/16", and 1/32". The quick connect type and four-piece set make it an essential accessory for any rotary tool user looking to save time and improve their workflow. Model Number: 4485