Features: 1. Eight Size Options: Choose from eight collet sizes (0.8mm, 1.2mm, 1.5mm, 1.8mm, 2.0mm, 2.4mm, 3.0mm, 3.2mm) to meet your specific needs, allowing for precise and versatile drilling applications. 2. Brass Material: Made from premium brass, these collets are resistant to breakage, lightweight, wear-resistant, and durable, ensuring long-lasting performance. 3. Compatibility: Compatible with all Dremel rotating tools and flex shafts, except discontinued models 1, 2, and 1 series, or earlier 260, 270, and 280 models, providing broad compatibility for various projects. 4. Improved Accuracy and Safety: The chuck collet set enhances accuracy by allowing better alignment with drill tools, maintaining stability even at high speeds, resulting in improved work efficiency and safety. 5. Complete Set: This kit includes eight 4485 brass collets and two metal nut chucks, providing convenience for daily replacement needs, giving you everything you need in one package. Specifications: Item Type: Drill Chuck Collet Set Material: Brass Weight: Approx. 21g / 0.7oz Collet Hole Sizes: 0.8mm (0.03in), 1.2mm (0.05in), 1.5mm (0.06in), 1.8mm (0.07in), 2.0mm (0.08in), 2.4mm (0.09in), 3.0mm (0.12in), 3.2mm (0.13in) Package List: 2 x Chuck 8 x Collet