Suitable for all lever door handles. Particularly recommended for use with lever latch on rose door handles. The case has two additional holes to accept the bolt through fixings supplied with these handles to ensure a secure fit and smooth operation.;Overall length is 76mm which will position the centre of the spindle hole 57mm from the edge of the door;Suitable for use on fire doors. Tested to EN12209-2003 & Certified to bear the CE mark;8mm spindle hole;Supplied complete with striker, nylon box keep & fixing screwsdoorfittings4u