https://www.jpcorry.com/jp-corry-products/eurospec-easi-t-5-lever-security-sash-lock-sil-(1)/
Eurospec Easi - T 5 Lever Security Sash Lock Silver S/Chrome
Description
This lock contains bolt through holes either side of the spindle hole, which enable use of the through bolts
You would generally select this type of lock for exterior doors, when an insurance rated lock is required.