This connector is a white, 1000 kcmil with a length of 5.250 in (133,4 mm), a 1.193 in (30,3 mm) I.D. and a 1.843 in (46,8 mm) O.D.
The 3M™ Scotchlok™ Aluminum Connector 20024 is for use with copper or aluminum conductors. These aluminum connectors feature color coded end caps for identification. Contact aid provided in connector barrel is compatible with poly/EPR insulations.
Scotchlok Aluminum Compression Connectors - Data Sheet (PDF 37.2 K)