91-300-4 Adjustable V-BlocksAdjustable V Blocks are a versatile tool for precisely measuring and positioning components. Their adjustable design allows for reliable and accurate handling of a wide range of materials and objects. These precision made Adjustable V Blocks performs all of the functions normally requiring the use of various blocks, shims, or non precision machinist jacks. Supports single and multiple diameter shafts, bars, etc. by quickly adjusting height. Features