The Omni QuickTrack™ Adapter attaches to a standard rear rack or Racktime® system platform allowing the use of popular Topeak TrunkBags and rear baskets. Adjustable mounting brackets fit rear rack widths from 90mm to 120mm with 10mm to 12mm rack tube dimensions. 4 adjustable mounting positions fit different length of rear racks. Fits rack tubesStandard TA2406: ø10mm - ø12mmLargeTA3001: ø12mm - ø16mm Adjustable mounting brackets accommodate rear rack widthStandard TA2406: 90mm - 120mmLargeTA3001: 120mm - 160mm Compatible with Topeak MTX / RX TrunkBags and MTX rear baskets Attachments Rear rack deck Material Engineering grade polymer Compatibility Fits rear rack without top plate and spring clip Standard TA2406:Rack tubes 10mm to 12mm diameterRear rack width 90mm - 120mm LargeTA3001:Rack tubes 12mm to 16mm diameterRear rack width 120mm - 160mm MAX load Limited to rack max loading rating Added features Compatible with Topeak MTX / RX TrunkBags and MTX baskets Size Standard TA2406: 32 x 9.4 x 6.1 cmLargeTA3001: 32 x 12.5 x 6.4 cm Weight Standard TA2406: 230 gLargeTA3001: 247 g