Stash RCX version is designed for forks without an opening at the bottom of steerer tube. It utilizes a compression plug to replace the star nut. Stash RCX fits forks with steerer inner diameter between 23.5mm to 27mm Super lightweight storage for essential tools, hidden away in your steerer tube Hides an 8piece multi-tool and spoke key/valve core remover inside your steerer, weighing just 145g; tool only weighs 57g Tools include: 2, 2.5, 3, 4, 5, 6 hex keys, T25 Torx key, flathead screwdriver, 0, 1, 2, 3 spoke keys, and valve core tool Installation is quick and easy with no tapping of your steerer required and includes everything needed