•8mm Hex: BMW (back axle), Ford (gear box), GM (back axle, gear box).
•8mm (5/16”) Sq.: Citroen (gear box, sump), Peugeot (back axle, gear box, sump), Volvo (sump), Renault (sump), Talbot (gear box, sump).
•9mm Hex: General Motors (back axle).         
•10mm Hex: Ford (back axle). 
•11mm Sq.: Ford (back axle, gear box).  
•12mm Hex: Fia Lancia (gear box, sump), Peugeot Talbot (gear box, sump).
•13mm Sq.: Nissan (back axle, gear box), Subaru (back axle).
•14mm Hex: Lancia (gear box, sump), Mercedes-Benz (back axle, gear box).
•17mm Hex: Audi (gear box), Austin (gear box), BMW (gear box), VW (gear box).
•3/8” Hex: BLMC (Morris) (back axle), Lancia Beta (Diff).
•3/8” Sq.: Honda (gear box, sump), Mazda (back axle, gear box), Renault (gear box, sump), Saab (gear box), Volvo (back axle, sump).

•8mm Hex: BMW (back axle), Ford (gear box), GM (back axle, gear box).
•8mm (5/16”) Sq.: Citroen (gear box, sump), Peugeot (back axle, gear box, sump), Volvo (sump), Renault (sump), Talbot (gear box, sump).
•9mm Hex: General Motors (back axle).         
•10mm Hex: Ford (back axle). 
•11mm Sq.: Ford (back axle, gear box).  
•12mm Hex: Fia Lancia (gear box, sump), Peugeot Talbot (gear box, sump).
•13mm Sq.: Nissan (back axle, gear box), Subaru (back axle).
•14mm Hex: Lancia (gear box, sump), Mercedes-Benz (back axle, gear box).
•17mm Hex: Audi (gear box), Austin (gear box), BMW (gear box), VW (gear box).
•3/8” Hex: BLMC (Morris) (back axle), Lancia Beta (Diff).
•3/8” Sq.: Honda (gear box, sump), Mazda (back axle, gear box), Renault (gear box, sump), Saab (gear box), Volvo (back axle, sump).