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