The Stash Chain Tool from Granite Designs is an ingenious design which lets you store a chain tool directly in your handlebar. No more carrying around bulky multi tools for the sake of a chain breaker, it even has storage for a quick link (not included). Who's this item for: Riders after some seriously sneaky tech to carry a chain tool. Chain compatibility: Compatible with 9-12 speed chains. Materials: CNC machined out of 7075 alloy, it is lightweight and strong. Dimensions and Weight: 30x30x96mm with the large cap (used for open end grips). 21.8x21.8 x96mm with the small cap (used for single lock on grips). It weighs only 50gms.Whats in the box: 1 x Stash Chain Tool (includes tool body, steel pin, rivet driving screw). Expansion Rubber. 30mm Side Cap. 22mm Side Cap. Pros: Fits in your handle bar, works on 9-12 speed chains. Cons: May have to remove your grip to get access to it.