CRL 8 x 1/2" Pan Head Spanner Tamperproof Type A-Sheet Metal Screws Tube Drill Bits They are designed to drill

They are designed to drill their own hole

CRL's All Terrain Dolly is like having an extra person on the job site

Specifically designed to eliminate mistakes during insulating glass unit fabrication

with a motor-over-the-pad design for better balance and control

as well as tamper proof type Torx® head security screws

CRL 8 x 1/2" Pan Head Spanner Tamperproof Type A-Sheet Metal Screws Tube Drill Bits They are designed to drillMade of Corrosion Resistant 8 18 Stainless Steel Protect Valuable Fixtures These CRL Spanner Head Tamperproof Security Screws protect valuable fixtures and equipment from theft and vandalism, because they are virtually impossible to remove without the special matching screwdrivers. Flat or pan head available in machine or sheet metal Type A Styles. A regular screwdriver will not work with these screws, you must use a Spanner Bit. Product images shown