Specific to the Canyon Speedmax CF SLX, this is a downtube Di2 battery-holder kit, which contains the below parts. Canyon Speedmax CF SLX assembly battery-holder kit GP0003-01 parts kit Contents 2 x M4x12 DIN7991 screws 1 x power-unit adapter EP0301-01 1 x power-unit protection plate EP0302-01 2 x o-ring 14x2.5 mm Brand Canyon Battery Not included Weight 0.05 lbs Compatibility See compatible products