F/U 38mm - Key. The Alpro DB38 electric deadlocking bolt incorporates the latest design innovations to be applied to the manufacture of a transverse action deadlocking solenoid bolt. This electric deadlocking bolt offers the highest level of security, quality electronic ingenuity as the DB25 but with increased strength primarily achieved by utilising a larger diameter bolt pin, the DB38 is the preferred option when high physical strength is needed. . Holding force 2000kg - automatic deadlocking. Bolt throw 14mm. 14.2mm diameter bolt pin. 5 year guarantee