The difference between ShowerBlaster brand products and copycats, that even copy my photos, model names, and brand name to confuse the buyers, is that we put in writing in the description that we bore our over 12.5 gpm models to 21/32" inner diameter (the same as your water pipes) and in addition, we open up internal sections (not just the balljoint) to allow all that water to flow into the cavity of the showerhead and out the output ports. Nobody else describes that procedure because they don't do it! Only with these 2 modifications can you get the full water flow that's in your pipes. After all we have been doing this, and only this, for almost 20 years! GET FULLY ENERGIZED WITH THE ORIGINAL SHOWERBLASTER HIGH PRESSURE SHOWER HEAD THE WORLD'S #1 TOP SELLING HIGH PRESSURE SHOWERHEAD! PROVEN WITH OVER 8000 SOLD! ABSOLUTELY NOBODY MAKES A SHOWERHEAD THAT EVEN GETS CLOSE TO THE PRESSURE OF THIS SHOWER HEAD! I Offer Superior Quality High Pressure Shower Heads, No Gimmicks, No Hassle, No Nonsense, NOT EVER! I actuality sell the same grade ABS thermoplastic shower head sold by name brand manufacturers. It's a thicker Heavy Duty ABS grade plastic. It's Chemical / corrosion resistance: Water and Chemical cleaners will always corrode metals over time. I modify both the neck and Interior of the shower head without compromising it's integrity producing the highest pressure available in your water pipes! ABOUT SHOWERBLASTER I got started before anyone else manufactured and sold high pressure shower heads in 2004. Click on my id and verify this! Others claim to have been selling high pressure showerheads since 2000 but if you click on their id here's what you see: "Based in United States, shower.... has been an member since May 27, 2012." Ask yourself: Why would a seller imitate and try to copy the established US registered name ShowerBlaster, if not to confuse buyers? Look at their id and the pictures of their shower heads. One has the same red background in their picture! Don’t get scammed by windbag competitors - you don’t want buyers remorse! Do business with a proven honest - no gimmicks - no hassle - no nonsense seller – SHOWERBLASTER! I manufacture and sell the guaranteed best high pressure shower heads. The ORIGINAL (US registered) ShowerBlaster! Buy today and start enjoying a real shower with lots of water! *NEW SUPER POWERFUL 2.5 with restrictor on or over 12.5GPM (57LPM) without restrictor based on testing pressure of US ASCII code*. WIDE AREA COVERAGE HIGH PRESSURE SHOWERHEAD BY SHOWERBLASTER! * ShowerBlaster (Shower Blaster) is a registered trademark This model is a powerful and inexpensive modified shower head. It delivers a strong sharp stream, if you have normal water pressure**. THE DIFFERENCE BETWEEN SHOWERBLASTER AND COPYCATS: Two things to look for in the copycats listing descriptions if you want over 12.5 gpm water flow: 1. Was the inner diameter in the balljoint of your modified shower head bored to 21/32"? 2. Has the inside part been modified to allow all that water to flow freely through the shower head to the ports? Inserts: BEFORE AND AFTER MODIFICATIONS (description exceeds maximum possible length)