About This 🛠️【 Chrome Molybdenum Steel Construction】 High-density alloy resists deformation under heavy torque, ensuring reliable performance on rusted or seized bolts without cracking or chipping. 🌀 【Reverse-Spiral Flute Design】 Deep-cut grooves bite aggressively into stripped screw heads and rounded nuts, transforming stubborn removal into smooth, effortless extraction. 📐【 Complete SAE & Metric Sizing】 Versatile coverage from 1/4" to 3/4" (7mm-19mm) fits most automotive, machinery, and DIY fasteners – including lug nuts, exhaust bolts, and engine studs. ⚙️【 3/8" Impact-Ready Drive】 Reinforced square drive seamlessly connects to ratchets, impact wrenches, or drills for maximum power transfer in tight spaces. 🛡️ 【Anti-Corrosion Coating & Portable Case】 Black oxide finish shields against rust and oil degradation, while the compact molded case keeps sockets organized for garage or roadside emergencies. Overview Brand : Crosstar Item Length : 1.5 Inches Material : Chrome Molybdenum Steel Finish Type : phosphate coating Number of Pieces : 15