The self-locking hand-tight single (double) sleeve drill chuck is a representative product of technological upgrading, and its core advantage lies in the built-in mechanical self-locking structure. When the user rotates the chuck jacket by hand strength, the internal gear set will automatically trigger the locking mechanism, achieving a rigid connection between the drill bit and the chuck without the need for additional tapping or reinforcement with a wrench. This design not only avoids the problem of drill bit loosening that may occur during high-speed operation with traditional chucks, but also reduces the time for loading and unloading drill bits by more than 40%.

The double-set design style is also equipped with replaceable chuck jackets. Users can choose rubber anti-slip sleeves or metal wear-resistant sleeves according to the working environment. Rubber jackets can provide stronger grip in damp environments, while metal jackets are suitable for industrial scenarios with high temperatures or much dust. This type of chuck generally adopts a high-precision steel ball positioning system, with a clamping accuracy of up to 0.02mm. It is particularly suitable for operations with high precision requirements such as fine drilling in woodworking and drilling of metal sheets.