Shell slab strips are sold by the inch and each measure close to an inch, but we measure them out for each order. So, if you order 20, you might get 19, 20 or 21 strips to equal 20 inches. The Abalam strips are longer (a consistent length in this case) and so a little easier to install, and the figure is more consistent and stronger overall than the slab alternative. Both types are available in curved and straight strips with several options for width. The curved strips are ideal for rosettes. Around the body, one can work entirely with the straight strips but when working around the periphery of the guitar, most choose a combination of curved and straight pieces—about 50/50.