22mm White polymer Open Unifix Pipe Clip.
Made from heat resistant polypropylene, which withstands the temperature changes in central heating systems and is effective with pipes with temperatures up to 100 degrees Celsius.
5.5mm red plugs and a No.8 gauge screw are normally sufficient to secure the clips in this situation - ensure the screw is long enough to pass through the pipe clip and fully expand the full length of the fixing plug. 
 
Material
Premium grade polymer
Clip Size
22 mm
Pack Quantity
100
Compatible Pipe Diameter
22 mm
Installation Type
Snap‑fit, one‑screw
Use Case
Secure single pipe runs