Features: brand new and high quality Ergonomically designed handle, more convenient to use. Great workmanship, with strict quality control and quality assurance, high safety factor, can be used with peace of mind. Made of high-quality aluminum alloy materials, practical and durable. Product specifications: 0.9mm/1.27mm/1.3mm /1.5mm/2.0mm/2.5mm/ 3.0mm. Used in aircraft models, RC helicopters, other places where hexagon socket screws need to be removed. Specifications: Material: Aluminum Alloy Length: approx 17.3cm/6.for 81 inches Type: 0.9mm / 1.27mm / 1.3mm / 1.5mm / 2.0mm / 2.5mm / 3.0mm Package Includes: 7x/Set Screwdriver Set note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the pic may not reflect the actual color of the item.