Starrett Bi-Metal Fast Cut Hole Saw Blade, 4-1/8″Condition:* New Surplus Stock, No OEM Packaging. As Pictured.Additional Notes:* Max. Cutting Depth: 1-5/8″* Thread Size: 5/8-18* Saw Blade Diameter: 4-1/8″* Primary Saw Blade Application: Sheet Metal, Corrugated or Perforated Steel* Tooth Material: High Speed Steel* Application: Ideal for Thinner Gauge Material, Applications with Interrupted Cuts* Arbor Design: Not Included* Teeth per Inch: 5.5* Impact Rated: NoStarrett FCH0418-G