DZS Elec 2pcs M8x65 Black Bike Seat Clamp Seat Post Quick Release Saddle Parts for Folding Bicycle Mountain Bike

works great

All threads are carefully machined, the quick release level clamps down with good tension.The seat in your bike will stay in place.Please note that these set of quick release clamps and thicker, you may face difficulties to make it fit.Carefully read the description.

After a decent ride with a WeeRide Co Pilot tagalong children’s bike trailer, I stupidly forgot to secure the quick release bolt. After a couple miles down the road, another driver told me something fell off the back of my bike rack. Turned around to look for it but had no luck.I didn’t see any replacement bolts specific to WeeRide products but a complete spare hitch was available on Amazon for about $15.Not really needing another hitch, I opted for this set which fit the M8 size hole without issues. Albeit a little longer than the original bolt, I’ll take it as an additional safety feature with extra threads for the nut to hold on to. Plus now I have an extra bolt in case I’m a lazy idiot again!

The advertised length is 65mm, but that's overall length. The actual working length (the width that can be clamped) is more like 50mm at most, and that's with only a couple of threads grabbing on the adjustable end. It did work for me, but I think it's more suitable for 40 to 45 mm.

These worked perfectly to replace my broken handlebar quick release.

The problem is the misleading description. These are thinner M6 screws with M8 adapter washers. The middle of the white washers in the picture is how thick an M8 screw would be. If your clamp has strong flanges that the screw goes through, these should work to replace an M8 screw by using the adapter washers. The washers distorted in my clamp and the screw actually bent, making it useless. I needed a TRUE M8 screw. These should also be fine for an M6 clamp.

Bought these to fix up a recumbent bike that was missing one of the bolts for the seat. M8 bolts just like advertised, perfect length for what I needed!

My seat pole screw broke so time for a new one. Got the 2 packs and install was easy. Steady so far but the washers are made out of plastic so don't know how long these will last.

good