Use a pronged stud in place of a cap for a double-sided connector that can be snapped in the middle of 2 regular snap pieces, or stacked for infinite snapping.
Pronged Stud Die for KAM Hand Snap Pliers - KAMsnaps®
KAM Plastic Snaps Button Snap Fasteners Size 20 Sets B3 White
KAM Size 20 Snaps - 100 piece Studs (W-692) — Wazoodle Fabrics
1000 Pieces - B3 - White - Size 20 KAM® Pronged Studs KAM® pronged studs enable snap stacking. They take the place of a cap and allow your item to be
1000 Pieces - KAM® Pronged Studs (Size 20)
KAM Size 20 Snaps - 1000 piece Studs (W-696) — Wazoodle Fabrics
KAM Plastic Snap Parts Size 20 Pronged Studs for Double-Sided
Size 20 KAM Snap Parts: Caps/Sockets/Studs – I Like Big Buttons!
KAM Plastic Snap Parts Size 20 Pronged Studs for Double-Sided
Kam BetterJonny 15-Color Snaps Storage Container 150 Sets Size 20 T5 Plastic Fasteners Punch Poppers Closures No-Sew Buttons for Cloth Diaper/Bibs
Choosing the Right KAM Plastic Snap Size - KAMsnaps®
Size 20 KAM Snap Parts: Caps/Sockets/Studs – I Like Big Buttons!
Long Prong Snaps Button Snaps KAM Long Snaps KAM Snaps Extra Long