"These holders can be fastened to any organization board with TGS-01 screws","Holders are durable, providing good impact strength and are resistant to most chemicals","New pegs allow for easier set-up and repositioning of tool holders","The holder safely holds an assortment of 1/2\" SAE drive chrome and impact sockets 1/2" SOCKET HOLDER SAE 25PK TGH-06PS | Matco Tools