Adjustable single hung, double hung, sliding window, sliding glass door lock

A safety lock system for a single or double hung, side sliding window or sliding glass comprising:

• an outer tube having a locking pin;
• an inner tube receiving within the outer tube and having a channel connecting a plurality of locking slots;
• first and second connectors, each having a top opening and lateral opening, an end of the inner tube is received in the top opening of the first connector and an end of the outer tube is received in the top opening of the second connector;
• first and second mounting bases, each mounting base comprising a pin member, the first mounting base is received into the lateral opening of the first connector so that the pin member of the first mounting base is received in the end of the inner tube and the second mounting base is received into the lateral opening of the second connector so that the pin member of the second mounting base is received in the end of the outer tube;
• the top opening of the first connector is narrow to prevent the inner tube from rotating and the top opening of the second connector is wide to allow the outer tube to rotate, allowing the locking pin on the outer tube to be guided and positioned in a desired locking slot of the inner tube, telescopically adjusting the outer tube to the inner tube each connector further comprise a pivotal locking member to secure the mounting members in the respective connector and prevent each connector from shifting of the respective base due to vibration or use.