Note: Ships in 1-2 business days. Delivery time depends on the shipping method chosen at checkout. With precision sealed bearings and cold-forged, aluminum CNC machined cups, the Box One™ Titanium Square Taper bottom brackets are the best option for young BMX racers and other users. It is built for a three-piece crank in search of performance gains and weight savings. They have hollow, custom titanium-nitride-coated titanium spindles and carbon fiber center seals, helping keep the weight down between 185 and 190 grams. Features: Precision Abec-5 Sealed Bearings Lightweight Non-Structural Carbon Components Extra Rigid Titanium Spindle Specifications: Process: CNC-Machined Cups Material: Spindle: Titanium; Cups: Alloy; Sleeve: Carbon Fiber Finish: Titanium Nitride Coated Spindle Type: JIS Square Taper Spindle Length: 108mm or 113mm Shell Width: 68mm Thread: 1.37" x 24 TPI Compatibility: BSA Threaded Weight [108-113] (+/- 5%): 199-204 g / 7-7.2 oz