Check the listing for details. Hans Device Post Anchors WRENCH Plus WASHERS for INSIDE HELMET ONE PAIR -. Condition: New. Listed at 29.00 USD. This auction is for RACER THAT HAS A 2nd or 3rd Helmetand wants to INSTALL NUT WASHERS INSIDE SPARE HELMET for post anchors that you ALREADY HAVE Auction is for Hans Device Helmet Anchor Washer Set OnlyPLUS Hans flat wrench includedThese are the LARGER DIAMETER that Hans designed when the Sliding Tethers were introducedOutside Diameter is 1.700"The original ( before sliding tether ) nut washerswere approx 30% smaller and are NOT USED with sliding tethers **************************************This auction of nut washers fits both Standard Post Anchors and Pro Hans Post AnchorsDo not compare to some of the Imported Bootleg Post Anchors Parts we have seen on eBay These are manufactured by Hans ....we are an authorized FACTORY TRAINED Hans Dealer SFI and FIA approval Auction is for one complete pair of nut washers 1.7" diameterand ONE ( 1 ) HANS FLAT WRENCH Visit My eBay Store Froo www.froo.com | Froo Cross Sell, Free Cross Sell, Cross promote, eBay Marketing, eBay listing Apps, eBay Apps, eBay Application .. .. 4 77 Ebay (not us) Is now adding Internet sales tax to orders. It is being done to all ebay sales. (Not just ours)