This is my review of Delta Trinsic Faucet 9959T-DST with Touch20 Technology for a sink with a single hole. I'll tell you good and helpful stuff first but first you may want to skip down to the part of this review that deals with my Delta customer service experience. That way you could possibly save time by deciding not to buy the thing, period. First up -- you CAN uninstall your old sink and install the Delta Trinsic Faucet 9959T-DST with Touch20 Technology for a sink with a single hole, yourself. I know that because, I did it and I had never before done anything like that. I did it as a challenge but there was also the thing about the plumber wanting $100 to do it. Here's six tips for you: Tip number one: before your Delta Trinsic Faucet 9959T-DST with Touch20 Technology for a sink with a single hole ever arrives, go on-line to YouTube or wherever and locate a video or two about how to uninstall your previous faucet. Watch those videos five-thousand times because removing the old faucet may be the most difficult thing you'll experience. It was for me, anyway. Try this: (a) cut off the hot and cold water beneath the sink; (b) turn on the old faucet to drain any residual water; (c) detach then remove the spray hose by pulling it out through the old faucet; (d) spread apart the hot and cold water pipes on the old faucet; (e) having done steps (c) and (d) to make room to access the bolt holding the old faucet to the sink/counter, loosen and remove that bolt; (f) pull the hot and cold water pipes on the old faucet back together then push them up through the hole, while someone above guides and lifts. This took me some time and the old faucet was a wreck after it was out. Tip number two: before your Delta Trinsic Faucet 9959T-DST with Touch20 Technology for a sink with a single hole ever arrives, go to Delta's Web site and search for the video on installing an Addison Touch 20 Faucet. Watch that video five-thousand times. It's not exactly the same installation procedure that you'll experience but there is not a similar video for the Delta Trinsic Faucet 9959T-DST with Touch20 Technology for a sink with a single hole , and it has enough commonalities to be extremely helpful. Note: I tried repeatedly to include the exact Web site but it was eliminated each time. Tip number three: before your Delta Trinsic Faucet 9959T-DST with Touch20 Technology for a sink with a single hole ever arrives, go to Delta's Web site and download the Installation Instructions/Owners Manual and pictorial Quick Start Guide for the Touch20 Technology for a sink with a single hole. Read those things and look at all the pictures five-thousand times. It's exactly the same as what you'll experience. Note: I tried repeatedly to include the exact Web site but it was eliminated each time. Tip number four: insert the Delta Trinsic Faucet 9959T-DST with Touch20 Technology for a sink with a single hole down through the single hole. Have someone hold it so that the faucet light that illuminates when you'll tap the water on will face straight out towards you. Secure the faucet while it is being held in place. If your Delta Trinsic Faucet 9959T-DST with Touch20 Technology for a sink with a single hole comes with a three hole Isolation Plate (part RP37490) and you find there is not room for it beneath your sink/counter, you can still use it. A hacksaw will saw through that Isolation Plate (part RP37490) like the thing is soft butter. Tip number five: be sure to align the Solenoid Assembly (part RP64462) so that none of the wires cross each other and so that the metal "yoke" on it is isolated from anything it can touch; otherwise your Delta Trinsic Faucet 9959T-DST with Touch20 Technology for a sink with a single hole may turn itself on without ever being touched - as mine initially did. And that's spooky, so pay close attention to Step 2 of the Instruction Manual. Tip number six: chuck the batteries that came with the Delta Trinsic Faucet 9959T-DST with Touch20 Technology for a sink with a single hole and use six AA lithiums instead; that way you won't have to crawl back under that stupid counter to replace the batteries for a long-long time. "Step 7 of the InsructionManual," the last step of the installation instructions, instructed me to check for leaks, so I diligently checked for leaks as the instructions instructed. The spray hose (part of part RP62057) leaked at the point where it connected into the Solenoid Assembly (part RP64462) outlet - it leaked at the bottom of part RP64462. I tried to connect and clip parts RP62057 and RP64462 like the instructions instructed and then reconnect and clip them. Still leaked, so I did that till I puked, then finally gave up and called Delta, since the instructions plainly stated that replacement parts could be obtained by calling 1-800-345-DELTA (uh, that would be 1-800-345-33582). I tried 1-800-345-3358 and explained my problem to an extremely pleasant-sounding Delta customer service representative (don't know her part number). The pleasant lady said one of the parts probably needed replacing but it was back-ordered and she would be happy to send it to me in three to six weeks. "Huh? Do without a kitchen faucet for up to six weeks," said I? She said the only other Delta customer service help advice she could offer would be for me to uninstall the new Delta faucet (99595-DST with Touch 20 Technology) and reinstall the old faucet for the three to six week period. I hung up the phone somewhat less than gently. First, though, I did tell her to have a nice day. That really wasn't what I wanted to say to pleasant lady. But I managed to do my part to preserve the southern gentleman image. Close inspection on my part (old super-installer, Mike) seemed to reveal that the small rubber "O-Ring" (part RP13938) at the Solenoid Assembly outlet (part RP64462) was the culprit. The local hardware store sold me part RP13938 for 42 cents (tax included). I replaced part RP13938 on the end of part RP64462 and eureka, no more leak at the junction of parts RP62057 and RP64462. Was it worth all this effort? Yes! This high-tech faucet is decidedly the coolest thing in my kitchen. The kicker, though, is added self-confidence from having installed it myself. Of course, pocketing the C-note that would have gone to the plumber ain't all that bad either.