Made of steel with a super smooth Teflon inner coating. Size is approximately 2" OD x 1" tall. Sold Each. Exact replacement for Polaris part number 3514492. Fits the following Polaris models and more: 

2012-15 RZR 570

2008-14 RZR 800

2011-14 RZR 900

2014-16 RZR 1000

2011-13 Ranger 500

2014-16 Ranger 570

2008-09 Ranger 700

2010-15 Ranger 800

2013-16 Ranger 900

2015 Ranger ETX