Qkurt Presta to Schrader Bike Valve Adapter, Aluminum Alloy Adapter Converter Bicycle Valve

Good

The last valves i bought slipped off the presta valve. These do not, these work well and are strong.

I had a small compressor that came with a Schrader>Presta valve adaptor. I didn't know any different but it was obviously too short, air leaked every time I attached the compressor tube. Such a pain. Had to over-inflate then judge the air loss in removing the compressor tube. This works perfectly, not a molecule of air lost! Only 4 stars because I was never quite sure of the corrosion resistance of the materials (i.e. aluminium) when compared to brass from the product literature. If comparable, or better, then 5 stars.

Fit for purpose.

Didn't really work as advertised or expected. What was wrong with the old style cycle tyre valves - if it ain't broke don't fix it!

These little things have been fantastic. Using these on my son's racer wheels have meant that I can use my foot pump to inflate his tyres and especially as he has has a few flat tyres lately these have been well worth buying. Only ever needed one at a time but I've got spares now. Always used one of the metal ones. Would definitely recommend.

Arrived quickly

Useful to have but I don’t leave them fitted, they make already long Presta valves even longer and quite unsightly. Good addition for the saddle bag, at an ok price.

Adaptador para ruedas. No se puede escribir mucho más. Buena calidad y baratos

Ottimo prodotto. Adattatore perfetto per presta. Non ho riscontrato alcun difetto indicato da altri utenti. Funziona perfettamente con il compressore ed è possibile sia vedere la pressione sia procedere allo sgonfiaggio. Inoltre il gommino resta al suo posto. Fare attenzione perché le due coppie hanno un filettaggio con passo diverso per adattarsi a tutte le valvole. Consigliato

Worked fine with air compressor

Die Adapter sind passgenau gefertigt und zumindest die schwarzen Versionen, sogar ziemlich leicht. Wenn man nicht das Bedürfnis verspürt, die Dinger aus den Tiefen irgendwelcher Taschen herauszukramen, kann man sie mit einer Auto-Ventilkappe verschließen und dauerhaft auf dem Ventil belassen. Und ja, liebe Milligramm-Fetischisten, es ergibt eine Unwucht*. Wenn es Sie stört, klemmen Sie einfach auf der entgegengesetzten Seite vom Ventil einen kleinen, dem Gewicht der Kappe entsprechenden Stein ins Profil und... Sie wissen schon, Physik und so... Noch mal zu den Adaptern, sind vollkommen okay, würde ich wieder kaufen. *Ab einer Geschwindigkeit von ungefähr 85 km/h (auf Schotter) spürt man etwas. Ich kann aber nicht genau sagen, ob es daran liegt, dass der Reifen sich gerade in seine Bestandteile zerlegt, oder ob der Adapter der Auslöser ist.

Good quality for every now and then. I don't use it brutally. But I've had no issue