Seat Rail Mounting Pad Kit. Injection Molded ABS Spacers with Correct Serrated Locking Washers. Each Kit Contains Four of Each. Replace Your Broken or Deteriorated Fiber Spacers & Rusty Washers. These Fit Over the Mounting Studs on the Bottom of Both Bucket & Bench Seats. 1 Kit Required for Bench Seats, 2 Kits for Bucket Seats.