Smiths Architectural Solid Brass Knurled Knob 32mm Matt Black size:Satin Nickel |Ideal for use with either

|Ideal for use with either a power or manual Pozidriv screwdriver

|Clamps onto most aluminium greenhouse vents – no need for drilling

High speed acrylic polymer based

The advantages and properties of the internationally exclusive SPAX YELLOX surface at a glance:YELLOX achieves corrosion protection that is more than 6 times greater than that offered by blue zinc plating at the same surface thickness (layer thickness of 4–6 µm with artificial atmospheric corrosion)|YELLOX is free of chrome(VI) and thus far more  environmentally-friendly than conventional surfaces

Smiths Architectural Solid Brass Knurled Knob 32mm Matt Black size:Satin Nickel |Ideal for use with either