Atama Length:28.9 ± 1.0 mm
Shield Diameter:50.0 ± 1.5 mm
Head Width:20.1 ± 0.3 mm x 15.7± 0.3 mm
Shied Thickness:4.0 ~ 6.8 ± 0.8 mm
Avg. Wall Thickness:1.8 ± 0.3 mm