Gearwrench 80557 21 Pc 3/8″ Drive SAE Socket Set is designed for professional mechanics and DIY enthusiasts, offering superior durability, accessibility, and strength. The 90-tooth ratchet delivers a 4 swing arc, allowing for precise work in tight spaces. Made from premium alloy steel with a full-polish chrome finish, this set resists rust and corrosion while ensuring a long lifespan. The sockets feature off-corner loading to prevent fastener rounding, making this set a reliable choice for any toolbox.Features: 90-tooth ratchet provides a 4 swing arc for tight spaces. Full-polish chrome finish resists rust and corrosion. Hard-stamped size markings for quick identification. Knurled full-polish chrome extensions for a secure grip. Off-corner loading design reduces fastener rounding. Includes a blow-mold case for organized storage. Meets or exceeds ASME specifications.Benefits: Enhances productivity with a high-performance ratchet. Ensures long-term durability with corrosion-resistant materials. Provides easy socket identification with large size markings. Prevents damage to fasteners with off-corner loading. Keeps tools secure and organized in a sturdy storage case.Technical Specifications: Model: 80557 Drive Size: 3/8 Socket Type: SAE Number of Pieces: 21 Material: Premium alloy steel Finish: Full-polish chrome Ratchet Tooth Count: 90 Storage: Blow-mold case