From The Anvil Black Locking Staple Pin
The locking staple pin replaces the plain staple pin that you receive when you order a thumb latch and allows you to lock your toilet or bathroom door.
Overall Size: 2 1/2" x 2 1/8" (63mm x 54mm)
It has a leather thong with a pin to stop the movement of the latch bar.
Supplied with necessary fixing screws.
Dimensions & finish
Dimensions 2 1/2" x 2 1/8" (63mm x 54mm)