Suzuki Style Fuel Tank with Accessoires Type 2. These Steel Tanks come with accessoires like a cap, fuel petpock and sometimes fuel sensor.

Note: The pictures may differ a bit, but not in product quality.
Including: Cap and Tap!

Sizes: (These can differ a few milimiters)

Length: 470MM
Width max: 280MM
Width at the petcock point: 220MM
Tunnel depth at the front: 150MM
Tunnel depth at the petcock point: 90MM
Tunnel width at the front: 80MM
Tunnel width  at the petcock point: 90MM
Height max: 200MM