This drill chuck wrench is mainly made of high-speed steel, which is durable and practical. It can be applied to your electric hand drill and can easily replace broken ones. Including 10mm/13mm/16mm and other different specifications to meet your needs, will bring you a wider range of replacement and use, is a very good kit. Features -Color: Assorted Color. -Material: High-speed Steel. -Size: About 8.50X4.60X0.50cm/3.34X1.81X0.20inch. -It is made of more durable high-speed steel materials, which can serve you well. -The structure is reasonable, it can be used perfectly, and the installation is very easy. -Using craftsmanship, it has the characteristics of anti-rust, non-slip, abrasion resistance and . -The drill wrench replacement can be compatible with most brands of electric tools, and will be your essential accessory choice. -It is easy to replace the drill bit, which can help extend the service life of your electric drill and bring convenience to your daily life. Package list: 6 x drill chuck keys