KN4C----B0-L-21,BALL KNOB 0.750 IN DIAMETER WITH
KN4C----B1-L-21,BALL KNOB 1.000 IN DIAMETER WITH
KN4C----B1SL-21,BALL KNOB 1.000 IN DIAMETER WITH
KN4C----B2---21,BALL KNOB 1.250 IN DIAMETER WITH
KN4C----B2S--21,BALL KNOB 1.250 IN DIAMETER WITH
KN4C----B3---21,BALL KNOB 1.380 IN DIAMETER WITH
KN4C----B3S--21,BALL KNOB 1.380 IN DIAMETER WITH
KN4C----B4---21,BALL KNOB 1.470 IN DIAMETER WITH
