It should be a 3/8 wrench. Correction 10MM and use a socket
You need 10mm wrench
You need a 10mm wrench.
A 5/16 brake wrench
3/8 Allen wrench
Depends on the model of brakes. I have done thousands of brakes and usually I get under with 1/4, 5/16 and 7mm. One of them inevitably fits the bleed nipples.
Either 7/16ths or 10mm
bleed the brakes. check fluid level
You need to bleed the entire brake system. Bleed in this sequence, RR, LR, RF, LF. If you do not know how to do this, do a search online for "bleeding brakes" THE REAR WHEEL CYLINDERS MAY BE LEAKING SHOULD ALWAYS CHANGE WHEN DOING BRAKES AND BLEED REAR BRAKES
Have a helper pump the brakes a few times and hold pressure, reach behind the wheel you need to bleed and release the bleed screw, fluid or air should come out. Repeat this until no more air is released and repeat for the other wheels
You bleed the brakes just like you bleed any other cars brakes, there is no special way to bleed anti-lock brakes.
Take it to a mechanic. Easy, simple, costs a little more, but it gets done right.
If it is a hose, that runs from a hardline to a caliper or from a hard line to the hardline located on the axle, then you simply remove the old one, using a line wrench, install the new one, and bleed the brakes. To bleed the brakes, you start with the wheel farthest from the master cylinder, but if you only replaced one hose, then only bleed that one. If you must replace a line, then remove that line, either have someone or make up a new line yourself, install the new line, and bleed the brakes. If it is a hose, that runs from a hardline to a caliper or from a hard line to the hardline located on the axle, then you simply remove the old one, using a line wrench, install the new one, and bleed the brakes. To bleed the brakes, you start with the wheel farthest from the master cylinder, but if you only replaced one hose, then only bleed that one. If you must replace a line, then remove that line, either have someone or make up a new line yourself, install the new line, and bleed the brakes.