The Black and Decker MTRS10 Multievoâ"¢ Multi-Tool Reciprocating Saw Attachment is ideal for straight cutting and detailed cutting in wood, metal and plastic. It has a tool free blade change which allows fast and convenient accessory change and a variable speed trigger that delivers maximum control in all applications. The soft-grip handle and soft trigger provide maximum comfort. Specifications: No Load Speed: 0-2,700/min (With a 14.4 Volt unit).Stroke Length: 20mm. Blade Size: 150mm. MTRS10 Multievoâ"¢ Multi-Tool Reciprocating Saw Attachment