Kennametal RS4E-0216 Tool Holder, part of the Carboloy BOS40-EM family, is a stud-style tool holder configured to accept a W Bit and carries the RS4E-0216 designation. The BOS40-EM 2.31-0.375 configuration is provided with a W Bit, described in listings as a Command RS4E-0216 Stud W/Bit. Designed for Kennametal’s BOS40-EM cutting-tool ecosystem, this holder enables quick bit changes while maintaining alignment for reliable performance in machining operations.
