Material : Calf Leather Preforated Black Strap..Double Red Stitch  1 : 1 Dimension, Brushed SS Insignia Single Fold  Deployant Clasp,  all correct markings, Conversion Links (4 Pieces) from SS Bracelet to Strap  Inclusive

Dimension :

Lug/Buckle  :  28mm / 19mm 

Length :  71.5mm (110mm with Clasp ) / 107mm

Can install for :

All AP Royal Chronograph Secs at 12 watches.  Best Matched for F1 Singapore, G'Staad Classic, Masato, Tour Auto Limited Editions