Features: Double head, detachable, insulated, multi-functional and anti-skid. Made of high carbon steel, durable High quality workmanship, the product surfaces smooth without burrs, the cross freely interchangeable with complete specifications, and the industrial quality trustworthy-. Magnetization of the head can absorb screws, scrap iron, etc., which more convenient to use. Robust-and durable: high-quality chrome-vanadium steel selected, with high hardness, good toughness-, corrosion resistance and rust resistance, and longer service life-. Specifications: Material:High Carbon Steel Size:As Pictures Type: 6/5/4 Rod Diameter:approx 6mm/5mm/4mm Rod Length:approx 176mm/156mm/107mm Weight: 100g Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you. Package includes: 1PC Screwdriver