Triskele! Metal Hand Stamps.
The Triskele is found carved in Neolithic stones all over western Europe. It is sometimes adopted to represent the three Celtic realms of earth, sea and sky

Choose one of three sizes, clockwise or counterclockwise.
> Small. Set on 1/4" round shank, design actual 5x5.4 millimeters.
> Medium. Set on 3/8 round shank, design actual 7.6x8.3 millimeters.
> Large. Set on 1/2" round shank, design actual 10x11 millimeters.
Sets:
> Small mirrored set.
> Medium mirrored set.
> Large mirrored set.
> Set of three shown.
> Set of all six stamps.

Choose counter clockwise from inside circles, outward, as shown in first two photos. Or clockwise, as shown in measurement photo. Counter clockwise is expected symbolically, for a clockwise impression.
See last photo for what I mean by clockwise/counter clockwise.

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Remember you are buying the tool, not the impression. When I mention left or right I am referring to the tool/stamp itself.
Reasonable stampers. Be sure that first hit "sets" it.
These are sawed, filed and engraved by me.
They may each be a little different, as I make one for you special.
Hardened and then tempered tool steel. Rockwell hardness batch tested.
 Shanks are a bit less than 3" long.

INTERNATIONAL: If you choose more than 3 or 4 stamps, shipping weight may be greater than 8 ounces and I'll need to invoice you for the extra postage. Thanks. I wanted to offer the multiple stamp deal regardless.