For holding cylindrical parts on an adjustable base

PART #            THREAD     DIA.       HT.     
R20-50-VMB      1/4"-20     .50"     1.25"
R20-75-VMB      1/4"-20     .75"     1.25"
R20-1-VMB        1/4"-20     1.0"     1.25"
R20-125-VMB    1/4"-20   1.25"     1.25"

PART #            THREAD    DIA.        HT.    
R8-13-VMB          M8      13mm      32mm
R8-13-VMB          M8      19mm      32mm
R8-25-VMB          M8      25mm      32mm 
R8-32-VMB          M8      32mm      32mm