Kastar 971 Master Thread Chase Kit - 48-Piece SAE and Metric Tap and Die Set

The Kastar 971 Master Thread Chase Kit is a comprehensive 48-piece thread restoration solution designed for professional mechanics and serious DIY enthusiasts. This dual-system kit includes both SAE and metric thread chasers to handle virtually any thread repair job on automotive, motorcycle, marine, RV, and powersports equipment.

What's Included:

• 22 Thread Restorer Taps: SAE sizes include 1/4"-20, 5/16"-18, 3/8"-16, 7/16"-14, 1/2"-13, 9/16"-12, 1/4"-28, 5/16"-24, 3/8"-24, 7/16"-20, 1/2"-20, and 9/16"-18. Metric sizes include M6×1.0, M8×1.25, M10×1.0, M10×1.25, M10×1.5, M11×1.5, M12×1.25, M12×1.5, M12×1.75, and M14×1.5
• 26 Thread Restorer Dies: All tap sizes listed above, plus additional SAE sizes 5/8"-11 and 5/8"-18, and pitch gauges for 11, 12, 13, 14, 16, 18, 20, and 24 TPI plus metric pitches of 0.75mm, 1.0mm, 1.25mm, 1.5mm, 1.75mm, 2.0mm, 2.5mm, and 3.0mm
• Blow-molded storage case keeps all components organized and protected

Key Features:

• Thread chasers clean and restore existing threads without removing material like traditional taps and dies
• Covers the most common fastener sizes found in automotive and powersports applications
• Dual SAE/metric coverage eliminates the need for multiple kits
• Professional-grade construction for long-lasting durability
• Organized case makes it easy to identify and select the correct size

Thread chasers are essential for cleaning damaged or corroded threads on bolts, studs, and threaded holes. Unlike cutting taps and dies, thread restorers reform existing threads, making them ideal for maintenance and repair work where precision thread fit is critical.