Dual Control Lever SpecificationsShopping LinksCompatibility warning: none of the 7970 series components will work with other generation Di2 components. The plug is different and simply won't fit. These levers have two shift buttons eac and they weigh about 255g / pair.Details & SpecificationsModel number:ST-7970Weight:255 gE-Tube ports:0E-Tube Port type:SD50Type:Shifting LeverSeries:DURA-ACE 7970 (Road)Downloads:DURA-ACE 7970 service instructionsShopping linksAre you looking to upgrade your bike using this component or tool? I've added links to this component's shopping pages. If you make any purchase using the links below you'll support the site - at no cost to you.