20-Piece Wrench Set 10 Pcs SAE size: 5/32", 3/16", 13/64", 7/32", 15/64", 1/4", 9/32", 5/16", 3/8", 7/16" ; 10 Pcs metric size: 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm. Wrench sizes are stamped on both sides of handle for easier size identification.USAGE Perfectly fits all coon small hex fasteners, nuts and bolts, great for automotive, industry, electronics, mechanic, home, hobby and hard to reach, confined space use. Please confirm the size before purchase.DESIGN Angled 15box end for regular use applications. Box end2pcs 6 points, 8pcs 12 points.MATERIAL Made of high carbon steel and heat treated for strength and durability, additional mirror finish improves the corrosion resistance of the surface and effectively prolong the service life.