Vista Engineering - VS6-STST - Heavy Duty Dripped Safety Tie 150mm-400mm - BAG/100 - BOX/250General: The item you are purchasing is for 1x Box of 100 250 Heavy Duty Dripped Safety Ties @ 150mm 400mm (VS6 STST) Description & Application: Vista Engineering's VS6 is a heavy duty wall tie suitable for most buildings in the UK of any height, with cavities from 50 150mm. The drip feature prevents moisture travelling across the cavity. (Taking less space than vertical twist). (Type 1 Wall Tie) Design Drip feature to prevent moisture travelling