the Fuhr 859 2 rollers & 2 hooks split spindle is a type 3 split spindle lock in the 859 series which has 2 hooks and 2 Rollers. Please note that there are no serrations to accept shootbolts on this lock. Insert the split spindle 2/3 of the way in on the internal side and 1/3 of the way in on the external side. To change handing, undo the screw in the side of the lock case adjacent to the latch. Remove the latch, reverse, reinsert and replace the screw.
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