Compatible with baKblade 2.0, 3.0 and 2.0 Elite back shavers; 12 Dryglide blade cartridges are included Original patent-approved Dryglide safety blade technology allows our blade cartridges to create the smoothest and quickest shave on the market; Easy to use and replace; The cartridges are replaced by sliding in and out of the shaver housing unit; We recommend replacing your blade cartridges after every 5 to 7 shaves Cleaning brush included; Routinely cleaning your blade cartridges will extend the lifetime of each blade cartridge Bundle includes one pack of 12 Bakblade 2.0 replacement blade cartridges.