Recessed edges. Socket openings are designed to reduce fastener rounding. Deep sizes:3/8in., 7/16in., 11/16in., 13/16in. and 15/16in.
Performance Tool W38300 10 Piece 3/8in. Drive Sae Deep Socket Set
Performance Tool W36300 10 Piece 1/4in. Drive 6pt Deep Sae Socket Set
Performance Tool W32300 8 Piece 1/2in. Drive Sae Deep Socket Set
Performance Tool W36002 10 Piece 1/4in. Drive 6pt Sae Socket Set