Russell by Edelbrock 639550 SPEED BLEEDER 8MM X 1.0

Arrived on time and very good quality, but it didn't fit my truck ( not their fault), so I sent it back and got a box of assorted one with all sizes.

Pros - Fit application. Worked as advertised.Cons - Will not fit standard socket. Wrench or deep socket must be used (size 8mm). That means if these rust into place over time, you'd better have a 6 point deep 8mm socket handy the next time you bleed.Other thoughts - I don't know that these really save much time or effort. Putting a tube from a standard bleeder into a jelly jar half full of brake fluid worked for decades. Unless you just plan on bleeding your fluid straight onto the ground, you still have to hook tubing from these into a container. So what time does this save? None. That being said, I'm driving around with 4 of these on my car. It seemed like a good idea at the time and it won't hurt anything except maybe your wallet.

I recently replaced all my rubber brake lines on my '02 Miata. I added these at the same time. i had a lot of air in the system, but bleeding with these was a one person jib. I also bought one for my clutch slave cylinder, which i had replaced. It also made bleeding the clutch hydraulic system very easy.

A 1993 Escort with 1.9L engine uses a bleeder with M8-1.0 threads. When you select a bleeder with those threads and use the "Make Sure It Fits" feature, it says that is the wrong size for the Escort. Autozone will also sell you the wrong size bleeder but the manufacturer of the speed bleeder lists the correct size. Whatever car you order a bleeder for, check several references to determine what size you need.I haven't actually used the bleeder yet but there are plenty of reviews on that. Note that the package includes 2 bleeders.

NA/NB/NC front stock calipers, M8x1.0 thread. Front stock NA to NC Front Calipers 1990-2015. Helps in solo bleeding brakes. Turn the bleeder 1/4 turn can you can bleed brakes without air getting back in the system. Use a tube or rag to keep the fluid from spraying on suspension, wheel well and garage floor.

Do not buy these. I can confirm what another reviewer said. The listing makes you think you're buying getting 2 bleed valves and 2 caps. However, you are only sent 1 bleed valve. I requested a replacement and was sent the same thing. If for whatever reason you want to buy a set of 2 of these, that means spending $33. Just buy a brake bleed pump kit instead for $18

Incorrect bleeder(s). Even the Russell website says there should be 2 bleeders as a pair. I only got one the first time around and requested a replacement only to find they sent the exact same thing. These don’t even have the sealing putty on them. Will be returning both.

Bought these for my 1991 NA Miata. Easily installed with just a 8mm box wrench. For people that bleed their brakes often, it is advisable to reapply the grey thread-sealant that is sold separately (similar to a brake fluid resistant loctite) so the system cannot pull air in through the threads. I got these to use in conjunction with the bleeder bags and found the front brake bleeders are different from the rear: Russell 639550 fronts Russell 639570 back and supposedly the clutch bleed valve.

As expected, prompt delivery