Promax IG-45 Alloy Sealed Integrated Tapered 1-1/8 Top 1.5" Bottom Headset Includes 1-1/8" Fork Race BLK Model=Rebuild Kits }Ergon TS1 Sit Bone Measuring

}Ergon TS1 Sit Bone Measuring Tool

2mm ID x 41mm OD

OT-SP41 Housing is pre-lubricated with silicone grease

Color Blue Weight 53 Thread Pitch 1

Single bolt head pressed onto shaft

Promax IG-45 Alloy Sealed Integrated Tapered 1-1/8 Top 1.5" Bottom Headset Includes 1-1/8" Fork Race BLK Model=Rebuild Kits }Ergon TS1 Sit Bone MeasuringPromax IG 45 Alloy Sealed Integrated Tapered 1 1 8 Top 1. 5" Bottom Headset Includes 1 1 8" Fork Race Black. The IG 45 integrated headset features an aluminum cap bearing cover and crown race with super smooth rolling precision 4545 bearings. TECH SPECS Color Black Bearing Type Sealed Cartridge Crown Race 30 Defined Color Black S. H. I. S Upper IS42 S. H. I. S. Stem Clamp Diameter 28. 6 Threadless S. H. I. S Lower IS52