D-series clamps are designed for a M12 socket head screw.

Due to the low-profile design of OK-VISE clamps, it is possible to perform flexible three-directional machining of workpieces with one fastening. Machining in three planes ensures increased opportunities for further processing, and improved accuracy, thus saving time and money in the quality control procedures.

The clamping force of these clamps is up to 65 kN.

D-series clamps are also available in inch ( "imperial") versions. The center hole in the wedge is wider in order to fit the half-inch socket head screw.
In inch models last part of the code is -VTI or -WTI ( instead of -VT or -WT n metric models).