Professional grade, heavy-duty, 25mm fiberglass anti-slip rubber grip for maximum comfort and control. Heavy-gauge stainless steel blade channel protects and holds blades tight. Auto-lock for secure blade positioning. Features acetone-resistant handle and tool-free blade change. Includes double-honed UltraSharp black snap-off blade. For additional blades, refer to model No. 508 (SKU 300425).