1/4" RH STEEL JAM NUT
5/16" RH ALUMINUM JAM NUT
3/8" RH STEEL JAM NUT
3/8" RH ALUMINUM JAM NUT
5/8" LH STEEL JAM NUT- 3/4" HEX ALLOWS USE OF 3/4" WRENCH TO ADJUST
5/8" RH ALUMINUM JAM NUT