Model: 40 (IZS40~42), Type: NK (IZS31 Low Maintenance / IZS40~42 Energy Saving, Silicon )
Model: 40 (IZS40~42), Type: NJ (IZS31 Low Maintenance / IZS40~42 Energy Saving, Tungsten)
Applicable Bore Size: 05 (50/63mm)
Applicable Bore Size: 05 (50 & 63mm)