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