Plastruct Dressed Stone (2) O

What is this item and what package is it used with?
Where is the part situated on the kit?

FEATURES:
(What makes this item various, color, building and construction, material?)

INCLUDES:
(How many do you get? Itemize if more than one part.)

REQUIRES:
(What else does this item requirement to make it work?)

SPECIFICATIONS:
Length:
Width:
Height:
Diameter: (If relevant)

REMARKS:
(Any unique application or something it will not work with?)