Brand new in package and never installed for alloy lockring used to fasten the spider to the crankarm of Hollowgram Si or SiSL2 cranks.KP021/ is compatible with all BB30 Hollowgram cranks, and has been redesigned to fit 's press-fit bottom brackets. If you happen to an , you will this lockring, because the previous version will not fit.Easy to install and durable in use.It is suggested that be used during assembly, and requires the for KT012/ tool for install and removal.High Wear-resistant and durability.Type: Bicycle Accessoriescolor:BlackMaterial:7075 aluminum alloyPackage Contents:2 x lock ringOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.