Mul-T-Lock High Security Double Cylinder Deadbolt Grade 1

Bump, Drill and Pick Resistant Restricted Keys: no unauthorized duplication Anti-drill hardened pin above shear line,& ball bearings prevents screws being drilled Hardened Steel bolt mechanism Ball bearings in bolt lock it into strike box to protect against prying attack Works on 2 3/8 and 2 3/4 backset, adjustable bolt.  Spacers required for doors less than 1 3/8 thick Conforms to ansi Grade 1 and UL fire rated bolt Application High Security deadbolt system for commercial and residential doors.Operation90˚ key rotation throws the bolt 1" towards the frame, interlocking two hardened ball bearings with the strike to increase jimmying resistance. MaterialsRing and cylinder: solid brassBolt anti drilling ring: hardened steelStrike: steelPins: nickel silver and stainless steel Style: Double Sided Colors: Polished Brass - Brushed Chrome - Brown  KEYS NOT INCLUDED **Depending on availability, shipping may take up to 4-6 weeks** **Installation Not Included. All orders are for curb side delivery only. For installation requests, please make a note in your order and we will contact you**