Ref. : FBLS.01.BC.15 / FBLS.01.BC.16The clasps FBLS.01. BC.15 and FBLS.01. BC.16 are with high security. The box construction is simple. Good resistance over time. The model as filed can be easily optimized for mass production. See the clasps FBLS.01. BC.25 and FBLS.01.BC.26.