Universal Drive Shaft 2PCS 86mm-125mm Drive Axle Transmission Shaft Compatible with SCX10 RC Crawler Car Axial Stainless Steel Spare Parts, Cojoys

These use the classic round shaft with a flat end to hold it in place setups. however the flat section that holds the drive shaft in-line is only really near the end of the outer shaft. the majority of the drive shaft is completely round and hollow. so these would NOT BE A GOOD PICK FOR HIGH POWER OR BRUSH-LESS VEHICLES. I've purchased 2 sets in different lengths however for a baser-crawler truck and have not had any major issues with them yet. I wouldn't trust them to stay clean if they get wet, and I'm worried about how well the universal joint will hold up to too much dirt and debris. but for a low cost solution I'd say they're not bad.I'd STRONGLY suggest you not get these if you have a heavy rc truck, something brushless, or a lot of torque will be applied to them, as I doubt they will handle it well at all!they use two grub screws on each end to pinch the shaft, these screws are not always easy to get aligned correctly in their holes, and I did have two out of the four shafts I own get one screw stripped out (threaded in the drive shaft was completely ruined or torn out) so be very careful threading them on.Also, I STRONGLY suggest you use some thread locking material on these, I've lost a shaft already because the grub screws simply pinching the drive shaft instead of going through it allow it to fall off if they're not positioned correctly or not tight enough due to thread damage!

Slim but stupid hard steel. And the cvj's at the ends hold up very well. I have a scale rock bouncer and they take the beating great. However you cannot cut them down at all and they have no splines just one flat like a standard electric motor D Shape and are quite sloppy

The grub/set screws it comes with them are not great, I made some screws like MIP99062 that go all the way through that work great.This is my second set of these, and they seem to hold up fine. Not sure I would trust them on a high power rig though.I use a bit of heat shrink to make sure the silver retainer ring stays on. Never had one fall off without the heat shrink but better safe than sorry.

These look like good drivelines but do break easily I learned

Good Jungfac style driveshaft. Not super quiet obviously and would prefer one larger set screw per side rather than two abutting short grubs per side but pretty good value compared to alternatives. Would upgrade to MIP etc if have a brushed set up but these'll do for 540 brushed cans

Nice quality, but bind pretty easily. Using them on an SCX10 monster truck build and because of the driveshaft angles due to the lift they bind pretty easily. If using them on a stock height truck you should have no issues, nice quality.

on all of your parts, there are no I.D. of the part ends which is very crucial to using the part or having it fit!! I basically bought these parts for junk thanks to you not posting the I.D. of the ends!

Total junk!! I put them in a trail finder 2, stock. I ran 6 foot, the front driveshaft came apart. Didn't take my parts box with me, unfortunately. Picked up the pieces, but couldn't find the pin that keeps it together. Rather than waste the whole day and gone back home, I just dropped the front shaft out. Figured 2 wheel drive is better than nothing, went less than 6 foot again and same thing on the rear shaft, in pieces again. A stock trail finder don't not have enough torque to cause this. After getting home, I did a close inspection on the rear since I actually found all of it. I found that the pin that keeps it together was way too small for holes allowing the pin to somehow work it's self between the retaining spring, which is weak also and fall out. I absolutely won't recommend to anyone.