Go-Through system is suitable for extra long fixings and rods, as it removes the depth limit of standard sockets. 22mm Hex Drive: 72-Tooth Go-Through ratchet, 22mm inner Hex. Go-Through extension bar, 75mm. 7x Gear Lock Sockets, approx. 40mm long. Sizes: 19, 20, 21, 22, 23, 24, 25mm. Adapter: 22mm outer Hex to 1/2'' outer square, for ratchet. Adapter: 22mm inner Hex to 1/2'' inner square, for extension bar. 19mm Hex Drive: 72-Tooth Go-Through ratchet, 19mm inner Hex. Go-Through extension bar, 75mm. 11x Gear Lock Sockets, 30mm long. Sizes: 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm. Adapter: 19mm outer Hex to 3/8'' outer square, for ratchet. Adapter: 19mm inner Hex to 3/8'' inner square, for extension bar. 13mm Hex Drive: 72-Tooth Go-Through ratchet, 13mm inner Hex. Go-Through extension bar, 75mm. 11x Gear Lock Sockets, 25mm long. Sizes: 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13mm. Adapter: 13mm outer Hex to 1/4'' outer square. Adapter: 13mm inner Hex to 1/4'' inner square, for extension bar. Adapter: 13mm outer Hex to 1/4'' inner Hex, allows the ratchet be used as a standard 1/4'' ratchet. 1/4'' Drive Bits: Slot bits: 4 & 5mm. T-Star bits: T10, T15, T20. Cross slot bits: PH1 & PH2. Inner Hex bits: 4, 5 & 6mm.