Nitro Gear and Axle Spools and Mini Spools are the unit of choice for drag racing and hardcore off-road use. The no-frills design of the spool features no moving parts and provides 100 percent traction to both tires at all times. When traction and strength can not be compromised, Nitro spools will not let you down. Precision manufactured from the highest quality materials, using state-of-the-art machining and heat treating process.
Details:

• GM 10.5 Inch 14 Bolt, 14T, Full Float, 30 Spline, 3 Series, Nitro Lightweight Full Steel Spool
• Lightweight Design 8-9 Lbs. Less Compared To FSGM14T-3-30 
• 100 Percent Traction - 100 Percent Of The Time
• CNC Machined and Heat Treated
• One-Piece Design - No Moving Parts
• Differential: GM 10.5 Inch 14 Bolt 14T Full Float
• Gear Ratio: 4.10 and Down, Any A/M Thick
• Axle Splines: 30
• Material: Steel
• Ring Gear Bolts: 12 (Included)
• Manufacturer: Nitro Gear and Axle
• Warranty: Lifetime
• Sold As Each

Fits Vehicles:

• GM Trucks/SUVs w/GM 10.5 Inch, 14 Bolt, 14T Diff (4.10 and Down) w/30 Spline Full Float Axles