Size of muzzle: 10 R3.5 4 B4 OB1 OB4 13 R2L 6 B0.5 D2 J1 R0 3.5 8 B3 11 R1L R3L 4L D1 OB2 R3 6L B1 BT D3 J2 R1 9 B3.5 1 12 R2 2 R4 5 B0 OB3 3 7 B2 0