Vapor Brothers Standard Knobby Colored Whip® This is 11mm Knobby colored replacement Whip for the Vaporbrothers Regular or Standard vaporizer. Operate by holding the whip to the to the heating element. The bell shaped tip allows you to redirect the air flow by simply tilting your hand, providing for more control and a better heat flow through your herbs. This whip can be used with a Vaporbrothers Hands Free vaporizer; however, it will not attach to the heat element. The "fancy" whip line are handblown works of art created by talented artists using fine colored glass and special techniques. For best performance use only Vaporbrothers .75" replacement screens. Please note: This whip will NOT attach to the Hands Free vaporizer for one handed operation. If your current whip has a red "HOT" emblem on it and attaches to the heating element, your vaporizer is a Hands Free model.