Original Sense Herakles RTA -2 Atomizer
Parameter:
Diameter:    25mm (0.98 inch)
Depth    :       25mm (0.98 inch)
Height:    69mm (2.72 inch)
Width:    25mm (0.98 inch)
pre-order-authentic-sense-herakles-rta-2-rebuildable-tank-atomizer-black-stainless-steel-6ml-25mm-diameter

Original Sigelei Moonshot 24mm  RTA
Parameter:
Diameter    24mm (0.94 inch)
Depth    24mm (0.94 inch)
Height    32mm (1.26 inch)
Width    24mm (0.94 inch)
pre-order-authentic-sigelei-moonshot-24mm-200w-capable-rta-rebuildable-atomizer-silver-stainless-steel-3ml-24mm-diameter

Alleria RTA Clone It comes with 2-post design with 2 holes on each post, easy to build with large build room.
Parameter:
Diameter    23mm (0.91 inch)
Depth    23mm (0.91 inch)
Height    64mm (2.52 inch)
Width    23mm (0.91 inch)
alleria-style-rta-rebuildable-tank-atomizer-black-stainless-steel-3ml-23mm-diameter

Original Augvape Merlin RTA The AUGvape Merlin RTA features a single sided 2-post velocity style deck for single or stacked dual coil build.
Parameter:
Diameter    23mm (0.91 inch)
Depth    23mm (0.91 inch)
Height    53mm (2.09 inch)
Width    23mm (0.91 inch)
pre-order-authentic-augvape-merlin-rta-rebuildable-tank-atomizer-silver-stainless-steel-4ml-23mm-diameter