Width:21mm Lug ,18mm Buckle(Only Compatible With 18mm IWC Style Single Folding Clasp)
Length:55mm / 135mm
Thickness: 5.5mm At Watch Lug Area taper to 3mm towards Strap End .
Compatible with IWC 3717/3777 Pilot Chronograph or Any Other IWC , Flieger and all other watches with 21mm Lugs.
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