The Thermal Pos-I-Tie features a plastic wing nut, stainless-steel barrel, neoprene washer, and screw inserts for steel stud, concrete, CMU, brick, and wood backup walls. U-Seal Technology allows up to a ¾ in. inward adjustment to fit a variety of insulation and sheathing combinations. The system also creates a watertight seal. Available in zinc plated, carbon steel, or stainless steel varieties. Heckmann Building Products Inc. 800-621-4140.