8 designations
HK1812
18 × 24 × 12mm
Open
1 interchange
HK1816
18 × 24 × 16mm
NK 18/16
18 × 26 × 16mm
NK 18/20
18 × 26 × 20mm
HK1814
18 × 24 × 14mm
HK1818
18 × 24 × 18mm
JF18
18 × 43 × 16.5mm
JM18