The safety 1st handle lock is perfect to keep your cupboards safe and your baby or toddler out of harmrsquos way the cupboard lock is easy to use and extremely easy to install yet it will keep your cupboards locked without leaving any damage to fit simply fit the two loops on the existing cupboard knobs and tighten and lock into place to fit on to handles simply thread the loops through the handle and lock into place the safety first handle lock also has a clear indicator that will