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M20 x 260mm Chemical Stud, 22mm drill bit.
Comes with nut and washer.
After drilling and cleaning the hole, the capsule is inserted into the hole and the anchor / chemical stud is driven with a rotating/hammering action.
This breaks the capsule and mixes the contents.
The resulting chemical reaction creates a durable expansion pressure free bond between the anchor / chemical stud, the reacted resin, and the concrete.