3M 30121, Scotch-Brite Radial Bristle Disc Thin Bristle, 2 in x 3/8 in 220, 7100138295 
3M 54135, Scotch-Brite Roloc AL Surface Conditioning Disc TR, 2 in x NH A VFN, 7100075708, 200 per case 
Insize ISV-1H4307, RIGID BORESCOPE, 11.89″, 6928640323812
$2,632.88
Length 11.89″. View direction 70?.
Diameter .16″. Angle of view ?60?.
Focus distance .08″, depth of view .2~4″.
Dust/waterproof level: IP67. Can be used in the liquid with temperature -14?F~185?F.
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