Large size for more grip. Contains four each: One Inch by 3/8 diameter 10-32 Well-Nuts and 1.5 inch, number ten 10-32 stainless steel screws. (1 inch Well nut 07.2107.0000, 300162 and 1.5 inch screw 07.2108.0000, 300163.)
Use for extra thick mounting applications, such as a Scotty rod holder base, rudder brackets or foot braces for sit-on-top kayaks. Can be used to repair failed nut-serts, aka, screw boss. These are the same parts as found in the Wilderness Systems Gear Rail Screw Boss Repair Kit part number 9800807 for the repair of Slide Trax.
See Related Article for Instructions: Basics of Strap Eyes, Rivets and Well Nuts (customization of your kayak).