Description This balance collet chuck is made of high-quality 40CR steel with a quenching and blackening surface, which is hard and impact-resistant for long-term use. It adopts a dynamic balancing design and the machining speed is up to 30,000rpm, which can effectively improve the working efficiency. The compact size, lightweight, and storage box make the product easy to carry and store. It will surely become your good partner for woodworking! Key Features Long Service Life: Made of high-quality 40CR steel, with quenching and blackening treatment, the product is hard, wear-resistant, corrosion-resistant, rust-resistant, sturdy, and durable, ideal for woodworking. High Accuracy: It can absorb shock and impact force, with strong impact resistance and stable performance, resulting in high precision (runout accuracy of 0.005mm). Stable and Efficient: Adopting the G2.5 dynamic balance design, the machining speed can reach 30,000rpm, which is suitable for high-speed machining, and the precision is more stable during high-speed cutting. Details Clear Marks: Each storage box and product is clearly labeled, making it easy for you to distinguish and find the right tool quickly. Smooth Edge: The rounded and smooth edges not only add to the aesthetics of the product but also improve the safety of use. Application This product is widely used in drilling machines, grinding machines, lathes, and other processing machines. It is finely machined, impact-resistant, and suitable for high-speed use without a keyway. Specification Model: ISO30-ER32 Color: Black Shape: Cone Style: Modern Material: 40CR Steel Process: Quenching, Blackening Assembly Required: No Number of Pieces: 5 Runout Accuracy: 0.005mm Hardness: 50HRC Applicable Wrench: ER32 Clamping Range: 1-20mm/ 0.04-0.79 in Gross Weight: 3kg/ 6.61 lbs Net Weight: 2.6kg/ 5.73 lbs Package Size: 15*15*10 cm/ 5.91*5.91*3.94 in Each Product Height: 5 cm/ 1.97 in Package Included 5* Balance Collet Chucks 5* Storage Boxes