A raw briar block (PLS category). The size vary from block to block but they are around 300 gram per block and approx. 1 - 13 cm long, 7,5 cm. high (in the middle) and 5,5 cm. in thickness. It is Italian or Greek briar. If you have a special request please write this in the comment field and we will try to pick the right one. We give no warranty on briar blocks. It is a piece of nature.