30x8mm Flat File Sintered Diamond Bur, 10pcs – 46 Grit 6mm Shank for Stone, Concrete & Masonry

Heavy-duty 30x8mm Flat File Sintered Diamond Burs (6mm Shank, 75mm Length, 10-Piece Set) designed for precision groove shaping, slot filing, surface refinement, and aggressive stock removal on hard materials. Featuring a sintered metal matrix impregnated throughout with coarse 46-grit diamond particles, delivering prolonged tool life and dependable performance under severe mechanical stress.

Key Specifications

• Abrasive Head Dimensions: 30 mm (Length) x 8 mm (Width)
• Total Tool Length: 75 mm
• Shank Diameter: 6 mm
• Shape: Flat File / Rectangular Grinding File
• Grit: 46# Coarse
• Bond Type: Sintered Metal Matrix
• Quantity: 10 pieces

Recommended Applications

• Stone carving, slotting, and deep groove profiling in granite, marble, and quartz
• Concrete, masonry, and brick edge dressing and expansion joint cleaning
• Industrial ceramics, refractory bricks, and hard alloy surfacing

Usage Tips

• Always operate with water coolant or wet mist feed to prevent thermal degradation and keep abrasive pores clear.
• Maintain recommended operating speeds between 10,000 and 25,000 RPM based on workpiece hardness.