These are
the 5 Clusters of
Clinging! The Noble 8-fold Way
should indeed
be developed for the direct experience of these five Clusters
of Clinging,
for the full understanding and elimination of them, and for
their final
overcoming, abandoning and leaving all behind…This
Noble 8-fold Way
is
developed for the uprooting of all these five Clusters of Clinging!

Explanation:
The Cluster of Clinging to
Form is internally to one's ‘own body’ & externally
to what is appearing as
‘my world’ and
the bodies of others..
The Cluster
of Clinging to Feeling is the obsession with pleasant feeling,
fear of painful feeling & obstinate indifference towards neutral feeling…
The Cluster
of Clinging to Perception is the monomaniac fascination of the
manifold, diverse, and momentarily tantalizing objects of the six senses…
The Cluster
of Clinging to Construction
is fixated passion for
intending,
planning, attending, thinking, hoping, wanting, willing
and worrying…
The Cluster
of Clinging to
Consciousness is the addiction
to all that is seen,
heard, smelt, tasted, touched, and cognized…
Cluster
of Clinging means an
assemblage, bunch, clump, collection, group,
or knot of a tightly adhering collection of variegated attachment!
There
is nothing here ‘outside’ or ‘apart’ from these clusters of clinging,
neither
internally, nor externally! This 5-fold classification covers all...
The cause of clinging is
craving. The effect of clinging is becoming.

More on these 5 Clusters of Clinging
(Khandha):
http://What-Buddha-Said.net/drops/Any_Kind.htm
http://What-Buddha-Said.net/drops/Not_Yours.htm
http://What-Buddha-Said.net/drops/The_Leash.htm
http://What-Buddha-Said.net/drops/II/Like_Foam.htm
http://What-Buddha-Said.net/drops/Fingernail_of_Soil.htm
http://What-Buddha-Said.net/drops/Acquisition_of_Fuel.htm
http://What-Buddha-Said.net/drops/IV/Clustered_Truths.htm
http://What-Buddha-Said.net/drops/II/The_Burning_Five.htm
http://What-Buddha-Said.net/drops/IV/Stilling_of_Clinging.htm
http://What-Buddha-Said.net/library/DPPN/wtb/g_m/khandha.htm
http://What-Buddha-Said.net/drops/II/The_5_Clusters_of_Clinging.htm
http://What-Buddha-Said.net/drops/II/Things_that_can_be_clung_to.htm
http://What-Buddha-Said.net/drops/What_are_the_5_Clusters_of_Clinging.htm

Source (edited extract):
The Grouped Sayings of the Buddha.
Samyutta Nikāya.
Book [V:60-1] section 45: The Way. 178: The 5
Cluster of Clinging...