Malco Tools HW7X1/2ZT Zip-in® Self Piercing Sheet Metal Screws, #7 x 1/2, 1000 Count M2006 and register temperatures

and register temperatures

Uses 1 double A battery

(392 g) with battery

Stabilizes in 3 seconds with +/- 1° F accuracy

Strong bonds that will endure the life of the fittings

Malco Tools HW7X1/2ZT Zip-in® Self Piercing Sheet Metal Screws, #7 x 1/2, 1000 Count M2006 and register temperaturesMalco Tools HW7X1 2ZT Zip in Self Piercing Sheet Metal Screws, #7 x 1 2, 1000 Count Malcos Zip in Screws are known for their superior quality and is considered by many for being the best screw choice for HVAC metal duct fastening. A unique thread design and quality controlled manufacture spell the Zip in sheet metal screw difference. Zip ins are made with a sophisticated heat treat process which allows the screw to taper to a fine, sharp point without