Ref. : FBLP.01.BH.11S / FBLP.01.BH.12S / FBLP.01.BH.13S / FBLP.01.BH.14SWith FBLP.01.BH.11S and FBLP.01.BH.12S start a series of clasps with enhanced security. In the design of models FBLP.01.BH.13S and FBLP.01.BH.14S the security is elaborated in metal plates and not in threads like security in 8. These clasps, also the FBLP.01.BH.15S, ask for more work. They are used for quite heavy bracelets and necklaces.