i didnt see any names on it

Thanks for posting! Your sash appears to use the 26-014 Lower Sash Slide Latch which is used with the 26-002 Black Sash Release Lever. To determine if this is the right fit, you'll need to remove your existing latch and carefully compare the dimensions.

Detail of 26-014

Side view of 26-002

Profile view of 26-002

You may also need the 26-017 Retainer Clip along with the 26-016 spring. The pieces installed to the top left and right corner of the window are likely to be the 26-081 left hand and 26-082 right hand dust covers.

Take a look at the video and guide tagged below for an idea on how to replace this latch.