Lock only for Glass Door: fit for 0.315 inch to 0.47 inch thickness frameless double swing or sliding toughened glass door High Quality:Double bolt glass door lock, silver tone plated, high quality construction, package with 3 silver tone metal keys and several installing accessories Easy to Install and Remove: Can be internal or external control, the two sides all can be locked, inside locked use Knob, outside locked use key Application: For family house, flat gate, office door, parlour, saloon entrance gate, etc Specification:Suit for 0.315 inch to 0.47 inch thick glass door Frameless glass door lock no punching, easy installation, stainless steel, strengthened bolt, match both single and double-acting door, open by key from inside and outside or only one side.