Compare the outer mechanism on some of the best (and worst) Square-1 puzzles.

MFJS Square-1 Core (Outer)

MoYu MeiLong Core (Outer)

QiYi MFG Core (Outer)

QiYi Volt V1 Core (Outer)

QiYi Volt V2 M Core (Outer)

QiYi Volt V2 M UD Core (Outer)

ShengShou V1 Core (Outer)

YJ GuanLong V1 Core (Outer)

YuXin Little Magic Core (Outer)

Compare the inner cores on some of the best (and worst) Square-1 puzzles.

MFJS Square-1 Core (Inner)

MoYu MeiLong Core (Inner)

QiYi MFG Core (Inner)

QiYi QiFa Core (Inner)

QiYi Volt V1 Core (Inner)

QiYi Volt V2 M Core (Inner)

QiYi Volt V2 M UD  Core (Inner)

ShengShou V1 Core (Inner)

YJ GuanLong V1 Core (Inner)

YuXin Little Magic M Core (Inner)