1. Made of metal and plastic, strong and durable. 2. Ideal for securing the watch to prevent slipping. 3. Make watch repair work easier. 4. Dimensions: -Type B: 7.9 x 4.8 x 3.1 cm -Type D: 8.3 x 3.7 x 5.0 cm - Type E: 7.1 x 4.6 x 4.0 cm 5. Weight: -B type: 63 grams -D model: 78.4 grams -E type: 71 grams
