Wrench is Made of High-Strength Chrome-Vanadium Steel Construction to Ensure Durability, and an Additional Mirror Finish Improves the Surface’s Corrosion Resistance, Effectively Extending Eervice Life. Easy to use, Precision 12-Point Box end Allows Easy Fastener Engagement. End Offset by 15 Degrees is Better for Tight Working Spaces. Our Wrench Lengths Provide Better Lever Performance, Making Your Job Easier and Effectively Loosening Stubborn or Rusty Bolts and Nuts. Wrench sizes include SAE: 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 19/32, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1 in. Metric: 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm. Equipped with a dedicated wrench storage case for safe storage, Makes organizing easy. 16-Piece SAE: 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 19/32, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1 in. 16-Piece Metric: 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm.