SK61608 – 8mm 90° Countersink Burr, 6mm Shank Single Cut for Steel & Cast Iron

The SK61608 is a 90° countersink carbide burr with an 8mm head and 6mm shank, designed for chamfering, deburring, and countersinking in tight spots. The single-cut fluting gives you smooth control and a clean finish—ideal for prepping holes, breaking edges, or cleaning up after drilling in steel, stainless, and cast iron.

Whether you're chasing a clean seat for a fastener or knocking off a burr that doesn’t belong, this burr gets it done without fuss.

Specs:

• Shape: 90° Countersink (Type K)
• Head diameter: 8mm
• Cut length: 8mm
• Shank: 6mm
• Overall length: 57mm
• Cut type: Single cut
• Material: Brazed solid carbide

Recommended RPM: 8,000–14,000 depending on material.