Capri Tools 3/16 in. Double Flaring Tool (CP21110-316)

Awesome. Perfect tool. Literally saved me on a late Sunday with messed up brake lines. It worked so much easier and bette than those junk ones. Flared the line in like 5 mins. The basic version (the non dual head) does both bubble and double flares also btw, had a bit if confusion with that.

Incredibly easy to use. Having never flared brake lines before I was curious as to how long it would take me to make effective flared ends. First one out was perfect as were the rest of them. For prep I filed the end to make sure it was flat, filed a small bevel around the end then lightly de-burred with a utility knife. Followed the instructions for the tool and the results were great.First flare was on a scrap piece of typical steel 3/16 tubing which required just a bit more torque to seat the die using a 17mm ratchet wrench. The rest of the job was using 3/16 NiCop tubing and it super easy.

Easy, quick, and effective. I had to double flare a rear brake line that was still attatched to my truck and in a tight space that the old wing nut style wouldn't fit into so I gave this one a shot. Laying on my back under my truck, in the driveway, in a tight spot up against the frame with about 3.5 inches of line to work with, this tool did a perfect, easy, double flare. Well worth the money spent. Highly recommend.

Have formed over 6 lines with double flared ends and have had no problems. Just cinch down line after getting it aligned with their tools and follow their instructions. This works great. just remember to add the lube so ends have easy time forming. Also dont be a Gorilla, just cinch tight. You know when its firm and you don't have to scrunch it more. I have used in vice without handle and with handle alone and both formed the fittings well.

This thing is Amazing. I dont see how anyone who can follow simple instructions cant flare a brake line. Believe me if you can't make this tool work you should not be working on something as important as brakes. It is so easy. Cut and deburr tubing slide on your fitting the thead side down. Then take the tool thread the given alinement stop bolt in the end and slide the tubing in firm against. Then tighten the 2 10m bolts to secure it to the line. Then take outo the alinement tool then take the die and thread it in the side marked operation 1 first and tighten until it bottoms out. Dont forget to greese it first. The unbolt the die and greese the other end snug it down. Then back it out and back off your 10 mm bolts and it's good to go with a perfect flare. I was doing a complete system so I was doing several flares. I used my 20 volt brushless 1/4 in dewalt impact driver to tighten the 10 mm bolts and to drive the 3/4 8n bolt. Not sure if that's recommended but it sure made things go fast. You just got to be smart and not get crazy and I had no problems. Out of a entire under the floor brake job I only had to redo 2 flares. Once because the tube slipped when tighten it down and wasn't in the tool enough. I mean it was a flare but not very pretty. Then the other was the typical thing we all do. I forgot to put my threaded fitting on. The line first and had to cut off a perfect flare. My only down side to the tool is the handle. I know they wanted it to be able to remove it so it could be used in a vice. The down side is it just screws in hand tight and it always backs off and the tool wants to spin in hand if its loose. Other than that this thing out the box will make flares like some of 400 dollar sets. For the price and quality job it does I am okay with it. Way better than the old kind that you clamp the tube between 2 bars and then slide the flaring tool on the arms. Then you had to use a little button thing and press again for a double and they never make the double ones well. They do Ok at a single flare but who is going to do brakes with a single flare? Also I would like to state that I ran a copper nickle line. I can not speak to how well it would do on steel lines. But I doubt it would have to much trouble. Also I seen someone say he had to modify the alignment bolt so it screwed in 1mm closer or something. I never had that issue. Maybe he had one that they missed on quality control who knows. But overall don't think twice if you need to do brake lines it's amazing. I got to run a 5/16 tube for fuel I was going to use the old style flare tool since it is very little pressure any way with a carb set up. But I might buy one like this in the bigger size. We will see. I hope this helps someone so they can decide to make a solid purchase of a great tool. You can look at my reviews I have done several and they are not all good and I am not paid. I call them like I see them I just think this is the most bang for the buck for this type of tool.

I'm nearly 72 1/2 Years of Age, & just have bent My own brake lines for the 1st time 😉. My take on this tool is it is a good idea, & never having flared a brake line in My Life used it & had a useable flare on the 4th go round, so it is easy & effective. My concern with the tool is it is made of some type of metal alloy instead of steel. The way You have to set this up & then insert the OP Bolt that actually creates the flaring puts a tremendous stress on the other parts of the tool & quite frankly I was leery that it may strip out due to the alloy metal it's made of. There are a couple of other concerns with it also-the machined out "tray" that the brake line sits in needs to be knurled in some way to keep the OP Bolt from pushing the brake line out & w/o the knurling You really have to crank down on the 2 locking bolts to keep it from doing so which brings up a couple more concerns, - the locking bolts are not all that substantial (& again You're screwing them into metal alloy) & if You look at how the tool is designed the 2 locking bolts are at an off set to each other leaving 1 corner of the tool w/o a bolt holding it together at that point (AGAIN You really have to torque the 2 main halves of the tool together to keep the main OP Bolt fm pushing out the brake line) it would make more sense to Me if there were actually 3 or 4 locking bolts instead of just 2 to hold the main body of the tool together. Yes, it does work, & it didn't brake/strip out, but if it would have been made out of case hardened steel instead of metal alloy & also had (preferably 4 instead of 2 locking bolts) & the 4 locking bolts being made out of a heaftier size case hardened steel I would have given it a 5 Star rating. 1 other thing, I actually had to take the handle off the tool (it just screws out/in) & put the main body of the tool in a Vise in order to flare the tubing. I can't imagine having to crank down on the OP Bolt how in the World You could flare the brake lines with them installed on the Vehicle w/o having to use a Vise. If You can, mo' power to You, You're a "better Man" than Me-😁 ! THE LORD Love's You !!! Best, PawPaw C