CRL 6-20 x 1/2" Pan Head Phillips Self-Drilling Screws Caulks & Accessories It has no markings

It has no markings

USE ONLY WITH ADEQUATE VENTILATION

a laser target (to extend useful range)

and allows attachment to glass of varying thickness with very little risk of damage

solid steel nail-setting head can be used for setting drywall nails and other hammering jobs

CRL 6-20 x 1/2" Pan Head Phillips Self-Drilling Screws Caulks & Accessories It has no markingsCut Their Own Holes in a Variety of Metals Speed Manufacturing and Fabricating Order in Bulk for Additional Savings CRL Self Drilling Screws combine a drill and screw into a single efficient unit to save time and labor costs. They are designed to drill their own hole, cut or form mating threads, and make a complete fastening in a single operation. Each is precision machined and heat treated under exacting standards to ensure quality performance. Self