Stanley 8Pcs Shallow Ofset Bihex Spanner Set ,6X7-20X22Mm 70-394E Matt finishing Maxi-Drive™ System Helps Reduce Fastener Rounding Shallow off ring spanner is made with chrome vanadium which is rust proof and is used for tightening of nuts and boltsAbout this item8 spanners:6mmx7mm,8mmx9mm,10mmx11mm,12mmx13mm,14mmx15mm,16mmx17 mm,18mmx+G7119 mm, 20 mm x 22 mmSet of 8 spanners which is made of chrome vanadium steelCoated with nickel Chrome to protect from rust. Ideal for tightening or loosening fastenersMaxiDriveTM and anti-slip open ended jaw shape maintains grip on fastenerAnti-Corrosion: it is made of chrome vanadium steel & it is coated with Nickel ChromeAnti-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