A wide range of Ferrea handles is available on the American and European market. We currently offer four different types of retainers to choose from: titanium steel, lightweight steel, steel and aluminum retainers, all CNC machined to perfection and offering excellent strength and stability. Fits: NISSAN 240 SX 2.4L - DOHC 16 VALVE (KA24DE) - 1991-1998 Dimensions: Valve head diameter: 7 mm Diameter (A): 28.20 mm Diameter outer step (B): 22.85 mm Diameter inner step (C): 17.15 mm The wide range of Ferrea retainers is available on the US and European market . We currently offer four different types of retainers to choose from: titanium steel, light steel, steel and aluminum retaining components, all of which are CNC machined to perfection and offer excellent strength and stability.Fits: NISSAN 240 SX 2.4L - DOHC 16 VALVE (KA24DE) - 1991-1998Dimensions: Head diameter: 7 mmDiameter (A): 28.20 mmOutstep diameter (B): 22.85 mmInstep diameter (C): 17.15 mm