Description: 100% brand new and high quality Feature: 4pcs hex screw driver tools set, 4.0/5.5/7.0/8.0mm are available. Stainless steel material, durable for long term service, alloy bit, high strength, resistant to stripping breaking. Simple and practical design, exqusite workmanship, comfortable hand grip and easy to use. Widely used for repairing or assembling remote control RC cars, helicoptor, boat and other devices. It can also be used in production lines such as electric screwdrivers, screwdrivers, electric drills, air drills, etc., engineering, machinery, and home appliance repairs. Specifications: Main Material: Stainless Steel Length: Approx. 21.5 cm/8.46 inch Note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you mind. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1x 4.0mm Hex Key Socket Screwdriver 1x 5.5mm Hex Key Socket Screwdriver 1x 7.0mm Hex Key Socket Screwdriver 1x 8.0mm Hex Key Socket Screwdriver