Alta Bicycle American to European Bottom Bracket Conversion Kit, Multiple Colors

I purchased this for an old Chicago Schwinn cruiser that uses a 3-piece (square taper) crank. I’d been using an open-bearing conversion kit since 1992, but the cones were getting old and pitted.First things first: it’s a great-looking product, but no instructions are included. None at all. Just two identical-looking internally-threaded adaptor cups and three long bolts. Now if you’re experienced with threaded bottom brackets, you know that nearly all of them have a left-hand thread for the fixed cup (or cartridge equivalent) on the right side and a right-hand thread for the adjusting cup on the left side – they are not swappable, unless you want a constantly-unscrewing bottom bracket. I tested threads until I identified the left-hand thread side (on my set, the one with the three threaded holes for the long bolts) and pressed it into the right side of the shell, followed by the right-hand thread one (on my set, the one with three countersunk unthreaded bolt openings) in the left side of the shell. After this, assembly went quickly, and the cups seated nicely. On my Schwinn, it accepts 68 mm width loose/raced bearing or cartridge bottom brackets without difficulty (73 mm BBs are too wide and won’t seat properly – I tested one).Based on the product alone, I’d give it five stars, but since instructions aren’t included, I’m reducing it one star. It looks like it should be durable – we’ll see.Update: over two years of service and hundreds of miles later, it’s holding up great. Hasn’t loosened or needed any adjustment.