Manufacturer Part Number: 10640|Clamp Set Type|T-SlotStud Thread Size|1/4-20Material|BrassT-Slot Size (Inch)|3/8T-Slot Size (mm)|Step Block Width (mm)|T-Slot Nut Width (Decimal Inch)|0.1900T-Slot Nut Width (mm)|Includes|(2) Hex Keys; (4) T-Nuts; (6) Fixture ClampsStep Block Widths (Decimal Inch)|Step Block Widths (Inch)|1/2Stud Lengths (Inch)|Stud Lengths (mm)|Maximum Capacitys in Set|Overall Length|T Slot Nut Width Inch(Fractional Inch)|Number Of Pieces|12UNSPSC Code|