Irwin SDS-Max 5/8 Inch x 21 Inch Rotary Hammer Drill Bit — RSDSM5821

The Irwin RSDSM5821 SDS-Max Rotary Hammer Drill Bit is purpose-built for heavy-duty masonry drilling applications that require extended reach. At 5/8 inch diameter and 21 inches overall length with a 16-inch drilling depth, this bit handles deep-hole concrete and masonry work that shorter bits simply cannot reach. Manufactured from chrome vanadium steel and heat treated to 50–53 HRC, the shot-peened, double-tempered finish reduces breakage and extends service life under demanding conditions. The reduced area above the flute prevents binding, delivering full usable drilling depth and improved productivity on the jobsite. Designed for SDS Max rotary hammers.

• Brand: Irwin
• Part Number / SKU: RSDSM5821
• Diameter: 5/8 Inch
• Overall Length: 21 Inch
• Drilling Depth: 16 Inch
• Shank Type: SDS Max
• Material: Chrome Vanadium Steel
• Hardness: 50–53 HRC
• Finish: Shot-Peened, Double-Tempered
• Application: Deep-hole concrete and masonry drilling

Available Variants:

• (1) Drill Bit
• 12 Pack

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