Easy to useIt will put a nicer bend then you ever could by hand. You definitely want to put your bends on this prior to getting your pipe up because this tool will do some serious damage if not given room to open freely. Works great on 1/4" tubes but tends to flatten the larger diameters a bit on sharper bends.Wonderful tight radius bends w/o any marring or deformation of the copper. Especially great for repiping in a compressor or recreating complex factory bends when relocating a line drier.I did not receive the product that I paid for.I only received 1 product 1 tool not 4 as image shows.Works good