You are bidding on one new Kuryakyn Crusher Chrome Slip Stream Exhaust Tip for Chrusher Mufflers, part number 493.  This auction is for the exhaust tip only and does not include any hardware.  The recessed/slip on diameter is 98.3mm and has a depth of 18mm, and the outside diameter of the tip is 102mm.  These tips are for 4 inch pipes.