New Moog/Precision u-joint.  This joint fits either the front (transmission yoke) or rear (differential yoke) u-joints.   This is a super strength, non-greasable (sealed) u-joint, which uses inside lock rings.  The u-joint caps are 1.125" in diameter, and the u-joint width is 3.6" on all crosses (1330 big series).  Please be advised that 1970-1975 models used a 1310 (1.063"/outside snap rings) and 1330 big series (1.125"/inside lock rings) U-joints in the driveshaft so please measure the caps and width to prevent ordering the wrong u-joints. For 1310 series use ITEM#124918003486.  These joints only work with factory driveshafts and rear ends.  These are not compatible with an aftermarket rear as performance aftermarket rears typically use a different series u-joint at the pinion yoke.  Fits the following:

70-81 Camaro (models with inside lock rings only)
70-81 Firebird/Trans Am (models with inside lock rings only)

NOTE : U-joints will require either a hand press or vice to install.  To prevent damage during installation, make sure the needle bearings to not fall or move during installation.