In Reference To :
Comparison :	Item # 12446944028, Male Elbow Hose Connector 4 mm x 1/8" Item # 12446944048, Male Elbow Hose Connector 4 mm x 1/4" Item # 12446945028, Male Elbow Hose Connector 5 mm x 1/8" Item # 12446945048, Male Elbow Hose Connector 5 mm x 1/4" Item # 12446945088, Male Elbow Hose Connector 5 mm x 1/2"