Aluminum Toothbrush Handle (Reusable)Your durable, low waste base for our replaceable bamboo heads. This lightweight, corrosion resistant aluminum handle features a precision threaded receiver for a snug, no wobble fit and years of daily use. Heads sold separately. Compatibility: Designed specifically for our bamboo replacement heads (Boar Bristle and Castor Oil Bristle). Why youll like it Low waste by design: Keep the handle for years; replace only the head. Solid, no wobble fit: