| 1 | J-hook / U-hook | Commonly 9 × 3 mm or 9 × 4 mm | Widely used across North America, Europe, Asia, and other markets | Check hook width and blade-adapter clearance; the two common hook sizes are not interchangeable in every adapter. |
| 2 | Side pin, 4 mm | Approximately 4 mm pin diameter | Found on various European and Asian vehicle applications | The blade adapter must match the pin diameter and locking position. |
| 3 | Side pin, 7 mm | Approximately 7 mm pin diameter | Used on selected European, Asian, and other international applications | Do not assume a 4 mm side-pin adapter will fit; verify the arm specification. |
| 4 | Bayonet, 7 mm | Approximately 7 mm wide bayonet arm | Common on some European vehicle applications | Requires a bayonet-specific adapter; confirm arm width and retention method. |
| 5 | Bayonet, 9 mm | Approximately 9 mm wide bayonet arm | Found on selected European and international applications | A different adapter may be required from the 7 mm bayonet version. |
| 6 | Pinch tab / pinch tab button | Common arm widths include about 19 mm and 22 mm | Seen on various European and Asian applications | Match the arm width and tab arrangement; similar-looking arms can use different blade adapters. |
| 7 | Push button / top lock, 16 mm | Approximately 16 mm wide arm interface | Used on selected newer vehicles across several regions | Check the button position, arm width, and adapter profile before installation. |
| 8 | Push button / top lock, 19 mm | Approximately 19 mm wide arm interface | Found on selected vehicles in European and other global markets | Not automatically interchangeable with a 16 mm push-button connection. |
| 9 | Slim top lock | Narrow top-mounted locking profile; dimensions vary by design | Present on selected modern vehicles in multiple regions | Use an adapter specifically shaped for the slim profile; appearance alone is not enough to confirm fit. |
| 10 | Side lock / side button | Side-mounted locking feature; interface dimensions vary | Used on selected vehicle applications across global markets | Confirm the locking feature’s position and shape, plus the arm width, against the adapter instructions. |