PMB , Permanent Magnetic Block Special Chuck

The Magnetic Block is useful for holding small work for manufacturing and inspection. The Block can be located and held on a machine surface or any magnetically conductive surface by turning the bottom On-Off hex knob. Work can be positioned on top of the block and held securely by turning the top On-Off hex knob. Top and bottom sections operate independently of each other.
Products specifications
Length 6-1/2 in
Width 3-3/16 in
Height 3-3/4 in
Weight 14 lb