KIPP K0179.2A2X50 GRIP ROD 1/4-20 L=50 D=8 FORM:A BALL KNOB STEEL BLACK OXIDIZED COMP:THERMOSET COMP:BLACK HIGH-GLOSS Material: Knobs thermoset PF 31. Rod steel 1.0718 or stainless steel 1.4305 (AISI 303 equivalent). Version: Thermoset black, high-gloss polished. Steel black oxidized or bright stainless steel.