A tubular spare latch, designed for use with the BL2000 series, BL2400 series, BL2500 series and BL2700 series.
 
The internal variant comes in two different backsets:
2″ – part no. S204
2 3/8″ – part no. S205
 
Be advised, by default, the product kits come with a 2 3/8″ tubular latch. If you are unsure on which version you require, the backset refers to the length from the face plate to the spindle follower.