Spanners with one end standard ring and the other gear ratchet ring. Complete with drive adapters for sockets and bits.Sizes: 8. 10. 12. 13. 14. 15. 16. 17. 18. 19mm1 – 1/4"" Dr Socket Adapter1 – 3/8"" Dr Socket Adapter1 – 1/2"" Dr Socket Adapter1 – 1/4"" Hex (F) x Bit AdapterLengths:8mm x 237mm10mm x 292mm12mm x 327mm13mm x 347mm14mm x 367mm15mm x 374mm16mm x 390mm17mm x 407mm18mm x 412mm19mm x 420mm"