This thing is big, bigger than you think it will be. If you have a small scope, probably better to get something a bit smaller. Also definitely get the 2” extender. I have it on a Sky-watcher 200p Dob and without the 2” extender not fun to use.
All that being said, this is the best finder by far.

This is a great finder i can see a faint object without blocking it out with a red dot with the finder that came with my new Celestron 8SE telescope.

I bought the Telrad a month ago. This is great piece kit of kit. I am new to astronomy. The telrad is great. It is solid and very easy to use. I managed to attached the telrad to my Skywatcher Skyliner 200P 8" Dobsonian telescope. Now I am point the telescope to any object in the sky. If you are new to astronomy I highly recommend telrad. I am also using Sky Safari which got telrad coordinates. Telard is well established so you will see telrad coordinates in most of the apps and sky maps. The service from FLO is great too. You will not regret this purchase

I purchased this for my Skywatcher 200p 8” dob which is also fairly newly acquired. Trying to find objects higher in the sky was proving difficult with just the straight finder scope, as it requires some contortionist skills I do not possess. So after deliberating between a telrad, Rigel quikfinder and RACI I decided on the telrad.

The telrad unit takes seconds to install using the foam tape supplied and was very easy to align, which I did to Vega.
Now, alongside a good star app (I use sky safari+) and low mag eyepiece, I can point at the region of sky I’m interested in and find the object of interest in seconds, honestly no exaggeration. It’s a superb piece of kit and looks great on my scope alongside the finder scope (which is a bit redundant now!).
I can’t recommend this enough, a definite 5 stars.

This finder is a bit chunky but solidly built. Without a rear sight there's a bit of a knack in getting your head and eye into position to see the reticle, but once you've got it it's dead easy to move the telescope to line the inner circle up with the object you're aiming at. You don't need to keep your eye particularly close to the finder, which is helpful. It's straightforward to adjust the collimation with the three knobs provided. This is far more satisfactory than the 9 x 50 finder I was using before.

I have owned various red dot finders over the years. But never the Telrad until now. And I kick myself for not buying this one years ago. I shall use it along with my 9x50 finder (which moves and needs realignment every time I set up. People say the Telrad is unsightly, I have to disagree, I think it looks great. Matter of taste I suppose. I like the fixing too, should be very stable and reliable.
As usual great service from F.L.O and super fast delivery.

Great speedy service from FLO. The Telrad provides a fantastic and simple method of star alignment in combination with any goto system. Wish I'd bought this sooner. So much easier!

Why didn't I get one before! Truly excellent in it's simplicity, design, and usefulness.

Bought to use on my 8" Dob, sits nicely next to my finderscope on the tube, allowing me to still use both. Quite light for it's size but also quite large, get the feeling it could easily have been made smaller.
Does it's job really well and makes navigating the night sky to find those almost invisble objects much easier than just using a regular finderscope.
Like most astrophotography tools/equipment however, you can't help but notice that you seem to be paying a premium to make your life easier rather than just paying a fair price for the product itself (NOT FLO's fault, it's the same everywhere with all types of astro equipment). Does not look or feel like it should cost £40, £20 max, but you'll never find one for that price.

I didn't replace my finderscope, I just stuck this on next to it. It's a great time saver. Not having a go-to scope, this makes everything so much easier to find. I am currently working my way through the Messier objects and being able to plonk the scope in the right area immediately and then use the finderscope to locate them precisely is so much simpler for an amateur like me!