Pratt (single egg) has no band or clip.
All egg capsules have no built in adapter.
Adapter, if required, must be glued on.
Dual egg has two cups (inserts) which can be glued as one. Also has a extension tube for the egg capsule.
The above Egglofter kits include a Rocket Kit and Capsule kit.
Rocket Kit: tube, fins, parachute kit, shock cord, centering rings,
shroud paper, instructions and drawings for duration and altitude
Capsule Kit: egg capsule (2 pieces), lanyard, swivel, launch lugs, egg wrapping tape, adapter,
egg padding, instructions, and drawings.
Pratt Hobbies CMR type dual egg capsules are two piece
with bulkhead, two inserts, and includes 2 capsule extension tubes.