The Mila Master 2 hooks 2 Bolts 4 Rollers SBAs 35mm Double features anti lift pins below each of the hooks to offer enhanced security. It is a double spindle unsprung gearbox and should only be used with sprung handles. If replacing a single spindle version it may be necessary to replace the handles as the screw may interfere with the lower spindle hole, alternatively purchase a single spindle lockcase only. Locking points are engaged by lift the lever and locked by turning the key. The top and bottom shootbolts are sold separately.