Critter Ware Wood Treat-K-Bob Refillable Treat Dispensing Toy. Comes with 3 Free Chews. Unscrew the bell, fill with ware wood chew or mineral chew treats and hang in pets home. Treat k bob easily attaches to any wire cage. Attaches to any wire pet cage. Measures 4-inch width by 1-inch depth by 9-1/2-inch height.