Impact socket wrench inserts with hexagon socket.
Long version.
For machine actuation (impact driver).
Drive: Square drive 1/2″ in accordance with DIN 3121, ISO 1174
Output: Hexagon socket HEX
Version: Chrome molybdenum steel
Surface: phosphated
Advice:
Every impact socket wrench or every impact drive element must have a groove and a hole that must be locked with a safety connector pin and a safety o-ring.