3M 21639, PSA Cloth Disc 348D, 36 X-weight, 6 in x NH, Die 600Z, 7000148149 
3M 28135, Hookit Clean Sanding Disc 900DZ, 6 in P100 J-weight, Die 500LG, 7010300153 
Insize 4901-6, BLOCK LEVEL, 6″, 6928640373862
$235.68
Sensitivity .00024in/ft (=0.001?)
V-groove on bottom for shafts (shafts diameter .63~2.76″)
With transverse vial
Supplied with adjusting wrench
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