1/4 Inch Drive Shallow 6-Point Socket Set with Rail, 11-Piece (5/32 - 9/16 in.) BoltsandNuts.com They are calibrated to be

They are calibrated to be accurate within ±3% for both clockwise and counterclockwise directions and certified to the ISO standard for the full listed range (10 - 100 ft-lb)

Also includes label sheets

Part Number DWCF328-XLCC

Part Number: BIT-D/APT

1/4 Inch Drive Shallow 6-Point Socket Set with Rail, 11-Piece (5/32 - 9/16 in.) BoltsandNuts.com They are calibrated to be6 point socket opening provides an ideal, exact fit for hex shaped fastener heads Socket geometry is designed to apply force to flat sides of fasteners and not the corners, preventing round off Shallow length socket is relatively versatile and suitable for a wide range of applications Extra large die stamped size markings are easy to read and cant wear off Polished, chrome plated finish easily wipes clean and is highly resistant to corrosion Four