A bottom bracket is pretty much just two bearings, so check out this Tribal bottom bracket, available in an array of colours!!Designed with precision and durability in mind, this Mid BB set features machined 6061 aluminium end caps and spacers, sealed cartridge bearings, a perfect fit for standard 19mm axles. Equipped with sealed cartridge bearings, this set guarantees airtight protection against dirt, dust, and moisture. No more worrying about the elements damaging your bearings – the Tribal BMX Mid BB keeps them in pristine condition, allowing you to focus solely on your BMX stunts and tricks. Spec Bearing internal size is 19mmWeight - 184g complete The kit contains 2 x bearings, aluminium dust covers, 4 x spacers and one internal spacing tube. This fits the standard 19mm axles. Mid bearings are 19mm internal diameter with a 41mm outer diameter and push fit directly into the frame.