BT-40 Retention Knobs/Pull Studs Made in the U.S.A.
Proudly Made In The U.S.A.
T.J. Davies’ Retention Knobs Are The Highest Quality Retention Knobs On The Market.
For Over 50 Years, They Have Been Second To None.
Retention Knobs / Pull Studs utilizing 8620 and 9310 alloy steel for its high tensile strength.
