Dynabrade 51630 .1 hp Straight-Line Extension Pencil Grinder, Central Vacuum, 1/8" Collet 
Insize ISV-1H4177, RIGID BORESCOPE, 6.85″, 6928640323775
$1,288.76
Length 6.85″. 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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