Boat Knife Pliers Tackle and Hook Holder, Clamp on, by Cuda's Customs Custom Clamp-on Knife, Pliers, Hooks or Tackle Holder. Clamps on Standard Size Aluminum or Stainless Vertical Pipes. 24 Holes for Your Hooks and Tackle and Protects Tip of Knife for Your Safety. Tough and Durable Part Made of UV Protected Marine Grade Starboard and Stainless Steel Screws. Rotates 360 Degrees Around Vertical Upright Pipes Without Damaging Pipe Beneath. Each Holder Custom Made for All Sizes of Vertical Upright Pipes on Your Boat.