Ocean Diamond APEXX Blue Thin-Wall UCS Core Bit. Drilling Depth: 2". Attachment: ⅝”-11. MAX RPM: 3500. Engineered with super soft bond to drill through the hardest stones; The perfect solution for drilling holes on porcelain and UCS surfaces such as Neolith, Lapitec and Dekton; Smooth, clean and fast; Constant cooling water must be used during the drilling process; Same bond/diamond as APEXX Green porcelain/UCS core bits which are approved by Cosentino for Dekton; 2" Drilling Depth which can drill through all porcelain/UCS materials; Material: Porcelain, Ultracompact Surfaces, Glass-like Surfaces, Marble; Wet use only.