Good Value - BUT - it didn't fit my Bosch mitre saw without modification!
This laser guide will always divide opinion - people either think it's a waste of time ("can't see the line", "won't cut where the line shows") etc. Or, it works for you, and when it does, it can speed up your cutting operations dramatically, especially when you've lots of sections to cut.
I took a bit of a risk and bought it for my Bosch GCM 800 SJ mitre saw.
Nope, it doesn't fit! Major panic, as it wasn't cheap and I was stung for import duties too!
After measuring everything, I discovered the centre hole is 10mm and the blade allen bolt on my saw is 6mm. With nothing to lose, I manufactured a small bush on my lathe. I found that a steel bush with an outside diameter of 10mm, and an inside bore of 6mm and an overall thickness of 5.75mm works a treat. Don't make it thinner than 5mm, as it might slip into the void and allow the laser to move out of alignment and don't make it thicker than 5.75mm as it will reduce the grip on the blade, which might slip). Simply fit the bush over the fixing allen bolt, thread through the laser unit hole, then tighten up!
Everything works fine. The blade is secure and neither slips nor vibrates. The line is visible and is perfectly on the left edge of the cut. In bright sunshine the laser line is "just" visible, but I live in England so it's not a frequent problem! So, do any of this at your own risk. I did and I'm really happy with the results.
Despite having to make a part myself (Oshlun, please provide these, they'd cost you next to nothing and increase sales) I love this product and recently cut dozens of t&g boards without any messing about.
Verified purchase: YesCondition: New