Features Resources CAD Files Unit of Measure - InchMaterial: AISI 4104 Pre-hardHardness: 28-32 HRCIncreases ejection stroke for knockout rodBlack oxide coating helps to inhibit corrosion.Two options for no internal threadEtched for easy identification1/4 -20 SCHS included View in Catalog IGS SAT SLDPRT STEP X_T