3M™ large hole wall repair kit is an innovative large hole repair kit that allows every diyer to fix thier walls like a professional. Using a new behind the-wall system and fiber reinforced compound allows an easy fix for holes ranging from 3 to 5 in. 3M™ large hole wall repair kit is an innovative large hole repair kit that allows every diyer to fix their walls like a professional. Using a new behind the wall system and fiber reinforced compound allows an easy fix for holes ranging from 3 to 5 in. Comes with 12 fl-oz tub of wall repair compound, 6 in self adhesive back plate, 6 in putty knife and 3M™ sanding pad. 3M™ Wall Repair Kit, High Strength Large Hole, White, =201 °F Flash, 0.8 % VOC