BLACKON Ceramic MTB Crankset Part Titanium Alloy Bike Axle Thread Kit Bicycle Bottom Bracket Ceramic Axle Bicycle BB Bike Crankset Shaft

Packing List: 1PC Bottom Bracket +2PCS Screw(not suitable for children's bicycle cranks)Material: Titanium Alloy Spindle + Stainless Steel Ceramic Bearing + Aluminum Alloy Shell + Aluminum alloy Dust Cover Specification: 103/107/110/113/119/122mm Thread: BC1.37 Color: Black/Red How to choose suitable specifications? The bottom bracket width needs to be 68mm And threaded Then measure the total length of the original axle In this way, you can determine the size you need~ Recommendation: Test Product: Titanium Alloy Hollow Shaft Product Material: Titanium Alloy Test Equipment: 20T Press Test Pressure: 10MPA Test Result: The Product Is Slightly Deformed And Not Broken. Test Product: 14MM Solid Socket Wrench Product Material: Steel Test Equipment: 20T Press Test Pressure: 7.5MPA Test Result: The Product Has Moderate Deformation And Is Not Broken. Deformation Comparison Chart After Test 10MPA Is Approximately Equal To 100Kg Pressure After Compa