Speed Slot features a staircase design for easy plug removal|Up to 2X the life in metal cutting|Deeper hole saw allows for easier removal|Enhanced tooth geometry, a thin kerf design, and an advanced coating for life and speed|2L, 5L arbors|Convenient storage for trade-specific uses|50% longer life|2X more durable vs. prior generation LENOX hole saw|Increased wall thickness improves durability and minimizes tooth loss|Larger, sharper teeth remove more wood for fast cutting|DURABLE: Durable construction resists damage caused by drops and tough workplace environments|SECURE: Latches close case tightly and securely|LONG LASTING: Metal latches and metal pin hinges won't break or tear