Torque accuracy of +/- 3% CW between 20% and 100% of wrench capability;Meets or exceeds ISO 6789 and ASME B107.300-2010 standards and specifications;Ratcheting head flexes up to 30° for improved access in narrow work spaces;Thin profile, sealed teardrop head design offers greater access and more durability for highly effective application;Pull adjustment collar feature allows you to make quick and easy torque setting changes