Universal Finger-Grip holder for cell phones 3-1/2" x 6" Mounts to your handlebar or 1/2" to 1-1/4" diameter tubing Mounts to brake reservoir or clutch reservoir clamps Hole centers have a minimum width of 0.94" and a maximum of 1.58" Includes: Finger Grip cradle, double socket arm, diamond adaptor base, standard and metric reservoir mounting hardware, stainless steel 40mm x 6mm, and u-clamp