Shed wood slat edging ('pointy corners')

[Been_ordered]

Hi all I am looking for the correct term for the finishing, edging pointy wood slats corner pieces to an octagnoal summer house, does naybody know what they are called. What I mean is the diamond like piece at the top of this diagram, what is the correct name for these? I wasnt to buy a pack and nail to each corner of my summer house.

http://www.tigersheds.com/_assets/img/site/medium/Summerbreeze-5x7-Shiplap-03-Props-W.jpg

 

[vinn]

You can cut such shapes from eg 22mm ply, pre paint and screw into position.
They are called finials.

 

[Been_ordered]

Thanks thats the one! Anywhere I can buy a pre cut pack of ten from? I dont have the tools to cut them myself, only have a junior hacksaw and handsaw! strugglign to find any at homebase/ebay etc