Introduction:                                
* Tubular lockset is an economical and easy to install product                                
    particularly adaptable for residential use.                                
* Guaranteed for over 200,000 life cycles.
* Can be keyed alike with deadbolts to improve security.
* Can be master keyed in a simple combination for family and facility use.
* Solid steel chassis and latch case, zinc plated for corrosion resistance.
* Exposed trim is made of either wrought stainless steel or brass.
* 1-piece reinforced knob as standard, esthetic 2-piece knob available upon request.
* 590H、607H are specially designed to suit the requirement of plastic steel door.
Features:
Latch Bolt
* Dead locking for keyed functions.
* Adjustable backset 2-3/8" or 2-3/4"(60mm/70mm) as standard.
* Adjustable 1" round drive-in 4-way latch is available upon request.
* 2-1/4"(57mm) curved lip strike as standard.
* 2-3/4"(70mm) strike available upon request.
Door Thickness
* Adjustable 1-3/8" to 1-3/4"(35mm to 45mm)as standard.
* 50mm(2") up to 70mm(2-3/4") for 590H and 607H.
Handing
* Fully reversible for left or right hand doors.