Lenox 3005656L Speed Slot Bi-Metal Hole Saw, 3-1/2 in. Dia. x 1.5 in Hex 90 Degree C temp rating

90 Degree C temp rating (with ampacity limited to that for 75 degree C conductors)

Provides proper clearance for vent from combustibles and serves as a firestop

light and easy to use

Brick Masons scale on inside

Mildew and Stains

Lenox 3005656L Speed Slot Bi-Metal Hole Saw, 3-1/2 in. Dia. x 1.5 in Hex 90 Degree C temp ratingHighlights: Diameter : 3 1 2 in. Length : 1. 5 in. Material : Bi Metal Usage : Wood and Metal Cutting Quick Change System Speed Slot features a staircase design for easy plug removal Up to 2X more life in metal cutting Enhanced tooth geometry a thin kerf design and an advanced coating contribute to the efficiency of the cutting process 2X more durable with 50% longer life than previous LENOX hole saws Increased wall thickness improves durability and