Ref. : FBLS.02.BH.10S / FBLS.02.BH.11S / FBLS.02.BH.12SThe clasp group FBLS.01.BH10S, FBLS.01.BH.11S and FBLS.01.BH.12S has a single spring-loaded blade that holds them in place in the box. The construction needs extra security. Three types of security are installed on the models. The blade of FBLS.01.BC.10S is slightly different in order to allow the integration of security. Clasps are extremely thin.