Number of layers (specification):

Standard single layer 53 long +4 clip hook

Standard single layer 55 long +4 clip hook

Standard Single Layer 58 long +4 clip hook

Standard single layer 60 long +4 clip hook

Heightened two-layer 53 long +4 clip hook

Heightened two-layer 55 long +4 clip hook

Heightened two-layer 58 long +4 clip hook

Heightened two-layer 60 long +4 clip hook

Upgraded four-layer 55 long +4 clip hook

Upgraded four-layer 60 long +4 clip hook

Upgraded five-layer 55 long +4 clip hook

Upgraded five-layer 60 long +4 clip hook