Will not corrode, compatible with all dental materials. Once optimum depth of 2mm reached. To make placement faster, easier and safer as reduces the risk of cracking and crazing, For better visibility during placement, also helps pin to self-align, Maximises retention strength without causing the internal stresses which can lead to cracking or crazing, Without breaking the pin or tooth, Limited at the shoulder so polit hole is drilled to the exact depth (2mm). Colour coded with pin for ease of selection.