Yale Spline Key
https://cdn.prod.website-files.com/69fd47b6fd25e9b4c1f02fce/6a7928195f18ceb2ba029dc2_MC11Key.jpeg
Spline keys are used for low security applications such as windows and door bolts. No cutting of the key is required as the ridges or teeth on the shaft mesh with grooves in the corresponding lock to engage the bolt.
- Suits Yale MC11 door bolt and MC14 window bolt