1. Giftable: they come in a zipped canvas bag, that has 4 compartments (fit for each tool).2. Great variety: there are two tools mostly used for facial gua sha (plus a third less commonly used one) but all 4 can be used on the body as well - I personally love the "triangular" one for legs/calves/arms/body.3. Easy to hold. So to be clear; there are NO HOLES in these tools even though it may look like it. But they are still easy to hold.4. I have high cheek bones and have thinned out in the face with age - I found that these work/fit/feel better on my face than other standard quartz or jade stone tools. (something to note).5. HIGH QUALITY! These stone pieces are well made. I'm very pleased with the craftsmanship.Minor CONS:6. With these, I feel like you need to keep your skin more often slippery/wet than with other standard quartz or jade pieces... On that note: I do not use more product (high molecular density hyaluronic acid) with these, and just run the tap on low and add more water.7. The "promised digital book" is no longer supported or available...On that note: remember this:do not use the edges (perpendicularly on your skin), angle the tools!Never use on dry skin - these need to glide at all times!For most applications (especially on and around the face) draw the tool UP! - the WHOLE point, aside from lymph draining, is to "defy gravity" ;)Over all - I love these. BUY THEM. THEY ARE GREAT.