Description: Material: Rubber Color: Black Watch band loop is made of silicone, a soft silicone like rubber. It is , sturdy and easy to get on the wristband. Just stretched or slipped it over the buckle. Durable and lightweight replacement loop, we have 3 size for choice which can fit any watch bands . Specification: For 18mm end (Using 19mm inside space loop),also Can fit 19mm end For 20mm end (Using 21mm inside space loop),also Can fit 21mm end For 22mm end (Using 23mm inside space loop),also Can fit 23mm end Size Chart: Size: 18mm: Inner Size 1.8x0.7cm/0.71x0.28inch; Outer Size 1.1x2.2cm/0.43x0.87inch; Width 8mm / 0.31inch 20mm: Inner Size 2x0.75cm/0.79x0.3inch; Outer Size 2.3x1.1cm/0.91x0.43inch; Width 8mm / 0.31inch 22mm: Inner Size 2.2x0.7cm/0.87x0.28inch; Outer Size 2.6x1cm/1.02x0.39inch; Width 8mm / 0.31inch Package Includes:(7 Pack) 10 Pieces Black Rubber Loops