This is a sheath with a cap with 2 magnets to secure the halves together. The magnets used are Prusa MK3S+ Space magnets, glued into the plastic. I have printed it in PLA but recommend PETG, Nylon or PC if you want to be wasteful :) Can be fitted onto a belt of sizes 40x3mm. F3D file included so you can modify it for different rods and belts. Includes a small hole at the bottom in case you get some water in your sheath. Happy printing :)