🔧 Elevate Your Tool Game with QnkaaSpline! Includes a comprehensive range of sizes from M4 to M18, perfect for various applications. Crafted from premium drop-forged, heat-treated S2 Alloy Steel for long-lasting performance. Each size is clearly stamped beside its slot in a compact, easy-to-carry case. Dedicated technical support available within 24 hours for any inquiries or issues. Fully polished, chrome-plated sockets with Zinc Phosphate treatment for superior protection. 10pcs set Durable case S2 Alloy Steel The QnkaaSpline Socket Bit Set includes 10 precision-engineered square spline bits and sockets, made from high-quality S2 Alloy Steel and designed for durability and corrosion resistance. Each piece is neatly organized in a portable case, ensuring you have the right tool at your fingertips for any job.