All sockets have the Bahco Dynamic Drive Profile. Bahco number S160. Set Contents: 16 pieces 1/4in 6-pt sockets dynamic drive: 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 1 piece 1/4in ratchet handle 60 teeth, with two component handle, 1 piece 1/4in sliding T-Bar, 100mm, 1 Piece 1/4in extension Bar 75mm, 1 Piece 1/4in flexible extension bar 150mm, 2 pieces removable three section plastic box with lid.