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

Delivery time: 4-5 days

Purchases USA/Canada

Size guide for straps

To determine your strap length, you can either measure your wrist circumference and determine your strap length in the table or use our templates, which you can download below.

Please find our templates for download here:

PIONEER strap template

PRIMUS strap template

Instructions: Print out the document and make sure that no page scaling is preset. Cut out the template along the red dotted line. Place the watch on your wrist and pull the strap through the cut slit. Make sure that the template is not too tight on your wrist and that you have a little space between your fingers. Please note that leather underlays result in a longer strap length.

Strap lengths:

PIONEER/417 ES: S = (10,5 / 6,5 cm) M =  (11,5 / 7,5 cm) L =  (12,5 / 9,0  cm)

PRIMUS: S =  (9,5/7,5 cm) M =  (10,5/8,5 cm) L =  (12,0/10,0 cm)

Racemaster: S= (10,4/6,4 cm) M= (11,4/7,4 cm) L= (12,4/8,4 cm)

Model Lug width Wrist circumference S-strap Wrist circumference M-strap Wrist circumference L-strap
General recommendation, regardless of model and strap - 13.0 cm - 16.0 cm 16.5 cm - 18.5 cm 19.0 cm - 22.0 cm
PIONEER Silva 20 mm - 15.0 cm - 21.0 cm 18.0 cm - 23.5 cm
417 ES 1954 (with Bund strap) 20 mm - 14.0 cm - 20.0 cm 17.0 cm - 22.0 cm
PIONEER Mk I, Mk II, TachyTele, Preventor9 20 mm 13.0 cm - 17.0 cm 14.0 cm - 20.5 cm 17.0 cm - 22.5 cm
Preventor HD12™ 20 mm - 14.0 cm - 20.0 cm 17.0 cm - 22.0 cm
417 ES (with Bund strap) 21 mm - 14.0 cm - 20.0 cm 18.0 cm - 23.0 cm
PIONEER TwinControl, MonoControl 21 mm 13.0 cm - 19.0 cm 15.5 cm - 21.5 cm 19.0 cm - 23.5 cm
PIONEER One 21 mm 13.0 cm - 19.0 cm 15.5 cm - 20.5 cm 18.0 cm - 23.5 cm
PIONEER TwinDicator, MonoScope 23 mm 13.0 cm - 19.0 cm 15.5 cm - 21.5 cm 18.0 cm - 24.0 cm
RACEMASTER 23 mm 13.0 cm - 18.0 cm 16.5 cm - 21.5 cm 18.5 cm - 23.5 cm
PRIMUS leather 24 mm 13.0 cm - 17.5 cm 16.0 cm - 20.0 cm 18.0 cm - 22.5 cm
PRIMUS rubber 24 mm - 14.0 cm - 18.5 cm 17.5 cm - 21.5 cm
PRIMUS textile 24 mm - 14.5 cm - 19.5 cm 17.5 cm - 21.5 cm
SKU: 9018.6930-61 Categories: , ,
Description

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.