Description: Premium Material - This drill bit extension set is made of industrial grade heavy-duty chrome-vanadium steel, durable, withstanding high pressure. Dimension-105° Right Angle Extension - The right angle drill bit extension has a standard 1/4'' Hex Shank and 1/4'' Hex Socket; Maximum torque of the angle drill adapter is 15N; Only for right angle head. Strong Magnetisim - Package includes 3 Length - 2"(60mm), 4"(100)mm, 6"(150mm) to satisfy your various needs. Locking mechanism and strong built-in magnetism make it easy to up batch head automatically, fast and quick release ensured. Widely-used - In installation of pneumatic screwdriver, electric screwdriver, pneumatic drill, manual screwdriver and other installation for the hexagonal tool . A must-have package for conversion. Great for DIY work, household maintenance, and most general repairs, not for industrial work. A great tool addition to any tool box set. Fine Workmanship - Excellent surface coating provides extra protection from damage against elements and substances such as oil and fluids that may come in contact with the extension bars during usage. Package Includes: 1 Set Magnetic Bit Holder(5 Pack) Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!