The centre slides within a guide to prevent distortion, even in smaller sizes.
Nickel shank, polished tip.

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  A
mm
I
mm
L
mm
B
mm

g
  251A.10,9127055
  251A.1,51,41580610
  251A.21,91883610
  251A.2,52,42192718
  251A.32,92495720
  251A.3,53,42797825
  251A.43,930100830
  251A.54,9331091045
  251A.65,9361121265