GU Old Style 35mm Backset 92pz Single Spindle uPVC Door Lock Centre Case Gearbox

Fullex XL Door Lock Centre Case Gearbox - Single Centre Case - 45mm

Fullex Door Lock Centre Case Gearbox - SL16 - 35mm

Lockmaster 35mm Backset Latch Deadbolt Single Spindle Door Lock Centre Case Gear Box - Non OEM

Lockmaster 35mm Backset Latch Deadbolt Dual Spindle Door Lock Centre Case Gear Box - Non OEM

Lockmaster 45mm backset / 92pz PL centre case gearbox 2 Follower

Lockmaster Mila Master Dual Twin Double Spindle 35mm Backset Door Lock Centre Case Gearbox

Paddock Lockmaster Twin Spindle Centre Lockcase - 45mm Backset - 124922