Stanley Double Open End Spanner Set 8Pcs 6X7 To 20X22Mm 70-379EAbout this Item:8 spanners 6x7m,8x9m,10x11m,12x13m,14x15m,16x17m,18x19m,20x22m respectivelySet of 8 spanners which is made of chrome vanadium steelCoated with nickel Chrome to protect from rust or corrosion.MaxiDriveTM and anti-slip open ended jaw shape maintains grip on fastenerAnti-slip: This is due to the extra grooving at the tip of the jaws.Spanner set for home & professional useLimited Life time warranty offered on the productThe product is manufactured by Stanley Black & Decker with registered trademarks