Fits Tank Depth: 12″ – 24″. Swingarm Electric Sending Units gather fuel level information the same way as the mechanical sending units. It does, however, connect to a dash mounted gauge without a conversion capsule. Calibrated to 33 to 240 Ohm’s. They are also a DIY product, letting the consumer measure their tank depth and make the swingarm the correct length. Internal components will not rust or corrode. Float rotates easily in 90 degree increments for tanks wall and baffle clearance.