So, you want to know what a Drilldo feels like inside. You think you have felt it all. You think you know what it feels like emptying your balls. You don't know jack. The drill is nice sized with a large battery. The attachment works well because it fits with the drill bit just right. Make sure you charge it up overnight. Do not use petroleum based lubes or else your dong will melt. Also invest in getting a vac-u-lock handle and suction cup, they cum in handy. Purchase some antibacterial spray as well. Have lots of towels handy. Amazing. use SILICONE lube, Swiss Navy is great. Have the time of your life.