CONSTRUCTION: Body Material: The cover body is made of polycarbonate. Surface Material: The cover surface is made of 304 stainless steel. DIMENSIONS: Face diameter: 2-5/8 Inches, Insert diameter: 2-1/2 Inches, Insert depth: 3/8 Inches. APPEARANCE: It gives a gloss finish to the surface and upgrades the appearance of your steering wheel -A Classy upgrade to your faded crappy plastic cap. EASY USE: It has a simple Installation, just snap-in. It has High strength, fatigue resistance, dimensional stability and it’s not easy to deform. It’s for use with destroyer-style steering wheels. Package Content: 1 Pcs MARINE CITY Stainless-Steel Cover surface 2-1/2 Inches Black PC Boat Steering Wheel Center Cap.