This refers to a specific type of shank system used primarily with rotary hammers. It is characterized by slots that allow for a secure and powerful connection between the tool and the drill bit or chisel. The “1 4 bit” component likely alludes to a dimensional specification, potentially 1/4 inch, related to the size or a feature of the compatible accessories used with the specified shank system. For instance, it could relate to the diameter of the shank of a particular drill bit designed for use with this standard.
The utilization of this standard enhances efficiency in demanding construction and demolition applications. Its robust design ensures minimal slippage and optimal transfer of energy from the power tool to the working surface. Historically, this type of interface evolved from simpler designs to meet the increasing demands of heavier-duty tasks, offering improved durability and reducing wear and tear on both the tool and its attachments.