The clamps from Makita are particularly robust and durable. They are made of solid steel and are powerful, making them ideal for Makita guide rails and plunge saws. The reach is 100 mm and the clamping width is 185 mm. Clamping width: 185 mm, reach: 100 mm, rail: 15 x 5 mm, material: steel, package contents: 2 pieces.