Depending on the variant selected, these clamps/adapters allow users to mount their OneUp Components Dropper Remote (V2 or V3) to their Shimano I-SPEC-II brake lever (I-SPEC-II Adapter), Avid/SRAM MMX bar mount (SRAM MMX Adapter), Shimano I-Spec EV (I-Spec EV Adapter), flat bars (22.2 Clamp), or drop bars (31.8 clamp). The SRAM MMX, Shimano I-Spec EV, and the I-SPEC-II Adapters are not a clamps - these adapters allows the mounting/attachment of the remote body to a riders pre-existing clamp/brake mount. The 31.8 Clamp and the 22.2 Clamp are stand-alone clamps - these clamps allows the mounting/attachment of the remote body to a riders bars who do not have or do not want to attach the dropper remote body to a pre-existing clamp/brake mount. This product does not contain a remote body. This product is not a universal product, it will only work to attach/mount a OneUp Components Dropper Remote body (V2 or V3). The 31.8 Adapter is for use with drop bars only. [CLICK HERE] V3 Dropper Remote [CLICK HERE] OneUp Components V3 Dropper Post, 30.9mm [CLICK HERE] OneUp Components V3 Dropper Post, 31.6mm [CLICK HERE] OneUp Components V3 Dropper Post, 34.9mm OneUp V3 Dropper Remote Clamp Dropper Seatpost Part