uxcell 2 Piece Pet Dog Cylinder Shape Training Whistle Keying, Silver Tone/Red Product Name : Dog Training Whistle; Material : Metal Color : Silver Tone, Red; Whistle Size : 6 x 1.2cm/2.4" x 0.47" (L*D) Keying Diameter : 2.5cm/1"; Total Length : 8.5cm/3.3" Weight : 18g Package : 2 x Dog Training Whistle