PIONEER/417 ES butterfly folding clasp for a leather strap, stainless steel

STRAPS PIONEER/417 ES butterfly folding clasp for a leather strap, stainless steel The practical clasp for quickly tightening the watch fits all PIONEER and 417 ES models on a leather strap with a strap width of 20 mm and 21 mm. The clasp owes its name ‘butterfly folding clasp’ to its double hinges (it opens on both sides) and is often also called a butterfly folding clasp. To convert your watch, you will need to remove your old clasp and attach the new butterfly folding clasp. We can do this for you on request.