this is the type of gears ALL HAP-P-KID Turbo/Super Fighters use, same deal with Robot Sergeant, Remote Robot Defender,King Titan, etc.
same for Fengyuan Universal fighters 5&7
and of course same for theZHI-BO Starriors meteoriod/oid stone, ele, lion, gorilla man ones
HOLE WILL REQUIRE SLIGHT ENLARGEMENT.
of course if you know about these they take 5 of this type.