Features; • A range of nylon rimmed plugs to suit screw sizes 3.5-12.0mm. • Finish: Grey Nylon. • For medium to heavy-duty applications. • Larger sizes suitable for use with coach screws. • Often used when fixing satellite dishes. • Moulded head prevents insertion beneath the substrate surface. • Two way expansion allows use on close to edge applications. • Sprung spin fins provide a two way lock, preventing spinning and loosening from overhead applications.