The BEST.  We wanted to provide a top quality drive flange kit that would still be affordable and we did just that.  They use gear steel (same as ring and pinion, transmission gears, etc) that machined by a gear manufacturer.  It uses four 1/4" bolts hold the caps in place.  Caps are made of a tough anodized aluminum.

Kit Includes:

• 2 Drive Slugs 
• 2 Hardened Aluminum Caps
• 2 Cold Roll Steel Retention Rings
• 2 Axle Clip Rings
• 2 Hub Clip Rings    
• 2 O-rings
• 8 Stainless Socket head cap screws and seals

Features:

• 8620 alloy and hardened to RC 60
• 6061 aluminum anodized caps with our logo. 
• Slugs can be removed for street driving while keeping the caps firmly attached.

OUR KITS ARE PROUDLY MADE IN THE USA!