The large markers for disc golf are a popular gadget, and here you get Discraft's Nuke in a Big Z plastic. This marker is somewhat larger than traditional minis, measuring 15 cm in diameter. This is exactly the maximum a mini must be for use in tournaments according to PDGA's requirements for mini markers in disc golf.
The mini is 15 cm in diameter and therefore one of the largest mini markers you must use in disc golf. This type of mini is also called macro discs.