For large phones 1.75" (44.5mm) to 4.5" (114mm) wide and max .875" (22.2mm) deep. Comes with the X-Grip and a one-piece socket arm (short 1.75" (44.5mm) socket to socket length) with tapered base that can be installed inside the round hole in the fork stem nut. Fits fork stem nuts with a center hole from 12 to 26 mm; and with the base reversed; from 27 to 38mm. Offers a very low profile install. Holds max. 2 lbs / 907 gram normal use or 1 lbs (454 gram) heavy duty use. Comes with the X-Grip and a one-piece socket arm (short 1.75" (44.5mm) socket to socket length) with tapered base that can be installed inside the round hole in the fork stem nut. Fits fork stem nuts with a center hole from 12 to 26 mm; and with the base reversed; from 27 to 38mm. Offers a very low profile install. Holds max. 2 lbs / 907 gram normal use or 1 lbs (454 gram) heavy duty use. - Short 1.75" (44.5mm) socket to socket length - Installs into 12mm to 38mm fork stem holes - 1" (25.4mm) diameter socket balls. Holds max. 2 lbs / 907 gram normal use or 1 lbs (454 gram) heavy duty use - Includes: (1) Optional Tether; (1) Glue Tube for Rubber Caps; (1) Expansion Plug for 12mm - 38mm (.5" - 1.49") Fork Stem Holes; (1) M5 x 60mm Machine Screw; (1) Steel Washer Set; (1) Nut Pocket Washer Set; (1) Brass Nylock Nut - Materials used: Marine-grade aluminum; high strength composite; stainless steel. Designed to fit into the cylindrical bore wall of fork stems that measure 12mm to 38mm (.5" to 1.49") in diamet