Blade:High carbon steel,Chrom-plated,through handened with 48 ±2HRC .Black tip with strong magnet Handle:New PP+TPR and humanized design. ItemSizeQty/CTNJY-0303 Φ3mm×3"(75mm)±240PCSJY-0504 Φ5mm×4"(100mm)±120PCS JY-0604 Φ6mm×4"(100mm)± 120PCS JY-0806 Φ8mm×6"(150mm)±60PCS
https://www.oxiontools.com/flat-screwdriver/