McGill Motorsport now offer as part of their Quick Release Hubs collection the Lifeline Touring & Rally Car Quick Release Steering Wheel Hub. This 6 bolt wheel boss is perfect at establishing a direct and secure quick release system. 

Key Features
• 6 x 70 PCD steering wheel fitment e.g. STR, Sparco etc
• Weld on 20mm dia shaft
• Master Spline for accurate alignment, Male Spline manufactured from EN3B steel
• Precision Cut Splines For Accurate Alignment
• CNC Manufactured Aircraft Quality Aluminium
• Hard Anodised For Strength and Durability