Pro Grip Studs - PGS-SG9-21
Self clearing studs. The studs are machined to push the dirt out of the stud hole as you screw the stud in.
The PGS-SG9 has a tungsten pin and a 9mm protrusion.
The PGS-SG13 has a tungsten pin and a 13mm protrusion.
The PGS-SG17 has a tungsten pin and a 17mm protrusion.
The PGS-SG21 has a tungsten pin and a 21m...