This Trend STAIRA is a template jig with well proven means of routing out stair housings quickly and accurately It is constructed from hard wearing Compact Grade High Pressure Laminate and includes a reversible fence for exact matching of stair strings and fully adjustable nosing piece It has a built-in heavy duty front clamp for quick clamping for each trench It is adjustable to suit private and common stair angle pitches and can be used with all heavy-duty routers over 1600 watts The Sub-base is pre-drilled to suit TrendDeWaltElu 12-inch routers for other makes the sub-base will have to be redrilled Tread Thickness 22-32 mm Slider Diameter 30 mm Nosing Adjustment 16-19 mm Length 585 mm Height 485 mm Width 125 mm Weight 617kg Kit includes- 1 x Adjustable reversible clamp 1 x Reversible clamp bar 1 x Sub-base 1 x Nose piece 1 x Line up pin and bush 2 x Spanners