Here's a compact sideways double piston extender(java) : r/redstone
compact double piston extender | Scrolller
Super small tileable double piston extender (horizontal) - Redstone Creations - Redstone Discussion and Mechanisms - Minecraft: Java Edition - Minecraft Forum - Minecraft Forum
I think I just made one of the smallest horizontal double piston extender!! (Minecraft 16w39c) : r/Minecraft
Horizontal Double Piston Extender (2-Wide) Flush with the wall 1.12 [v.2] - Screenshots - Show Your Creation - Minecraft Forum - Minecraft Forum
Cass sur Twitter : "@impulseSV those are won't be synchronized but they will extend/retract with a button click or if you just give them a 4-tick pulse. https://t.co/KHnJOWPaLl" / Twitter
Minecraft: How to make Tiny Piston Extenders - YouTube
Horizontal Double piston extender Minecraft Map
Simple and vertical working double piston extender : r/redstone
minecraft java edition minecraft redstone - What is the most compact design of down-shifting double-pistons? - Arqade