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Proto 3G-OTH-297941 — Technical Specifications

Name: Proto 3G-OTH-297941 PROTO Impact Socket: 1/2 in Drive Size, Metric, 21 mm Socket Size, 12-Point, Std, Black Oxide (MPN J7421MT). Key specifications — attr1215501: PROTO; attr1215515: Black Oxide; attr1215518: 21 mm.
Brand: Proto

The PROTO J7421MT is a 1/2" Drive Impact Socket with a 21 mm metric, 12-point standard configuration. It features a Black Oxide finish and is designed for impact tool use.

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Technical Specifications

Parameter	Value
Type	Metric, 12-Point, Std, Black Oxide
Socket Size	21 mm
Manufacturer Part Number	J7421MT