Paulatic - if you want to discuss members' views on birth control you could start your own thread.
'Sprintech' information is available on the SJS web-site.
I'll say it again, in a different way :
Do any members use bar-end mirrors?
What caused them to start?
Do they help - would users recommend their use?
Have any members used/tried 'Sprintech' mirrors?
Have users found them helpful?
Have members used more than one brand, and how do different brands compare?
'Sprintech' information is available on the SJS websitehttps://www.sjscycles.co.uk/accessories ... ors-black/
I've used bar end mirrors on drop bars for a decade.
Their use was necessitated by my disinclination to crick the old neck trying to look over my shoulder.
They're far better than a look over the shoulder. In fact (despite what many trot out about a "lifesaver" look-back) good mirrors mean no need to look over the shoulder, which brings it's own hazard of then not looking forward and perhaps wobbling as you neck-crick.
I used Cateye convex mirrors for many years but now use the Sprintech as they're far more stable, don't vibrate and give a very clear view behind as long as you use both LH and RH. Two mirrors allows you to see all the road behind when it's bending, whereas a single RH mirror, for example, means you can't see the road behind (because of your hip) if you're traversing a LH bend. A LH mirror is needed to see the whole road then.
If I ride a bike without mirror, I now feel vulnerable. Mirrors allow you to know about traffic coming up behind at a glance, any time you like, whilst still being able to see forward. This is far superior to a momentary (but often still too long) glance over the shoulder only before turning right, especially if wanting to move to the middle of the road to turn right against oncoming traffic.
Cat-eye bar end mirrors had a larger surface area than the Sprintech but suffered from going out of alignment in the wind at speed and vibrating with poor road surfaces, to a degree that you couldn't make out what they were reflecting. Sprintech don't bend in the wind and don't vibrate. Their area is smaller but they give a clear view at all times. It's important to get the angle of dangle right. WIder bars help - even a 42cm rather than a 40cm width makes a difference.
You need to clean them carefully (as if they were spectacles) as they can scratch. Don't use the cloth you just used to wipe the mud off your rims!