The medium size of the 3 Bull’s Secuda Cases. The Bull’s Secuda Cases are made of hard plastic and have a beautiful print on both the front and back. The alluminum corners make for a tough case. The Bull’s Secuda M-Case has a firm lock for a closure, which gives you the security that your case won’t suddenly open. The Secuda M-Case is compact and can hold a set of darts without flights. Other than that there is space for an extra set of shafts and 2 sets of dart flights.