supply of locks (link, harrison or similar) with 4 keys and 4 keyringslocks (link, harrison or similar) with 4 keys and 4 keyrings,locks (link, harrison or similar) with 4 keys and 4 keyrings as per description mentioned bel ow-heavy quality 65mm minimum eight lever with four locking match, double locking mechanism for doubl e strength, interlocking mechanism covered by zinc metal and following items activities as mentioned belo w- - room no. to be mentioned on lock, key and back side of key ring.- four key ring with each lock- four in dividual keys with each lock - key ring with stainless steel 304 material, 16 gauge-name of place either in h indi or english as supervisors training centre, north central railway, jhansi to be mentioned on key ring front side & back side room number [ warranty period: 6 months after the date of delivery ] ] => limited