Surly Big Dummy/Big Easy Trailer Hitch Assembly Black MPFN-N0AA20120O0100 Grade 3 Silicon Nitride balls

Grade 3 Silicon Nitride balls

}DT Swiss Cassette Seal: Fits all ratchet drive hubs

Diameter 700C Brand Sun Ringle Model M-13 II ISO 622 ID Width 13 Width OD 19

2 Bearing Type Cartridge Thickness 6

(mm) 24 Material Steel keyword search 2437 keyword search mr2437 Thickness 7

Surly Big Dummy/Big Easy Trailer Hitch Assembly Black MPFN-N0AA20120O0100 Grade 3 Silicon Nitride ballsSurly Big Dummy Big Easy Trailer Hitch Assembly Black. The Dummy Hitch assembly replaces the wheel yoke of your Surly Bill or Ted Trailer and inserts into the horizontal tubes on the non drive side of your Surly Big Dummy or Big Easy thereby making it possible to haul your trailer using your cargo bike.