This auction is for a pair of NOS wheel cylinder rebuild kits in perfect condition. Niehoff part # K-1310 ( REAR - 13/16" dia. ). Wagner part # F100999. These are NEW factory original " MADE IN THE USA " quality parts in the original factory package. Guaranteed superior quality that meets or exceeds all OEM specifications. Will fit 1978 1979 1980 Dodge ( Challenger, Colt ) and 1978-80 Plymouth ( Sapporo ). Combined shipping discounts apply on multiple purchases whenever possible. Questions are always welcome, so don't hesitate to ask. I have been selling on eBay for over 18 years so buy with confidence. Please check out my 100% feedback rating. Also be sure to check out my eBay store for more Vintage & Classic parts, accessories and auto literature. I list a large variety of NOS, NORS and quality used parts every week, so check back often.