2PK COMPLETE BOAT PEDESTAL SEAT MOUNT KIT: Our 3 piece set includes a black boat seat mounting plate, the boat seat pedestal post in 1/5" diameter and the boat pedestal base plug 3/4" in polished aluminum. Quick slide pieces in and out without locks VARIOUS BOATS AND INSTALLS: Our aluminum boat seats are designed for all boats. With a 6.7" x 6.7" boat seat mounting bracket, the marine seat pedestal can be used as a boat fishing seat, bass boat seat post or any boat seat and pedestal combo. MARINE GRADE DURABILITY: Our boat seat pedestals and bases kit are designed to withstand harsh conditions. Constructed from black powder coated steel and aluminum, our boat seat pedestal kit is designed to withstand salt water, rain, and snow. UNIVERSAL SIZING: The boat seat swivel mount is 13.5" from floor to seat bottom and features a suspension pin seat mount with holes from 5" to 6" distances. The post is 11" and the boat seat deck base is polished aluminum with a 3/4" bushing. WHY BETTER BOAT: We are a small family owned American business committed to making premium boat care products. We stand behind your satisfaction with our boat seat pedestals with swivel, boat seat mounting kit or any of our boat seat accessories. Replacing worn pedestal hardware means tracking down three compatible parts and hoping they fit together. The Better Boat Boat Seat Pedestal Kit ships as a matched three-piece set: polished aluminum deck base, 11-inch aluminum post, and a steel seat mount with built-in coil spring suspension. One purchase covers the full setup. The kit raises the seat 13.8 inches from deck to seat mount. The 3/4 inch pin slides into any standard pedestal socket without threading or locks. Pops in when arriving at a spot, out when done. The deck base accommodates bolt spacing from 5 to 6 inches to fit most jon, bass, and fishing boat decks. Mounting bolts are sold separately since deck material and thickness vary by boat. The post and deck base are polished aluminum. The seat mount plate is heavy-gauge black powder coated steel. Both resist corrosion in salt and fresh water through seasons of use. The coil spring built into the seat mount absorbs wakes and chop so impact does not travel straight to the rider. The 2-Pack includes two complete kits, ideal for port and starboard seating, two casting stations on a bass boat, or any configuration requiring two seat positions. Better Boat is a family owned American company based in Miami Beach, Florida. Backed by a 1-year manufacturer's warranty against defects.