For 4.0mm thick strip. Ref.TR41 is for 10.0mm wide and Ref.TR42 is for 15.0mm wide intumescent strip.
Dimensions:
D=40 mm
C=15 mm
B=32 mm
E=4 mm
Shank Diameter=1/2 inch
Shank Diameter: 1/2
Diameter Metric: 40
Cut Length Metric: 15
Bearing Diameter Metric: 32