For use on confined, deep, or layered surfaces, through-holes of dia. 1-7/16 in and larger are possible. QuickIN fitting, length 4 in, including centering pin. Fits: AJMU 137 PMQW (AJMU 137 PMQW), JMU 137-2 QW (JMU 137-2 QW), JCM 200 QX (JCM 200 QX), JCM 200 U (JCM 200 U), JCM 256 U (JCM 256 U), JCM 312 U (JCM 312 U), JCM 200 auto (JCM 200 auto), JCM 312 auto (JCM 312 auto)