Dynabrade 94992 1/4" Male Composite-Style Coupler with 1/4" Male Plug Assembly 
Insize 4168-7E, STEEL STANDARD BALLS, 9/32″, 6940561981452
$13.43
To measure angle and diameter of taper holes
Material: tool steel
Hardness: HRC63
Diameter accuracy:?.00012?
Roundness .00004″
Supplied with manufacturer inspection certificate.
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