tubular knob door lock ISO9001-2008 Certification,Guaranteed for over 175, ... lockEasy to install and economical,left and right handed door are available.Guaranteed for over 175,000 life cycles. ... Function:ET,BK,PS.Backset:60mm & 70mm.Door thickness:35mm-50mm.Finishes:AB,AC,PB,SS,SP, ... an annual sales capacity of 1, 800, 000 pieces door locks.our delivery is 45days after sign order;our quality ...