✅【20mm Fastener Ring】⚠️Please check your strap size before purchasing. Measure the width of the strap joint to 20mm to fit. It is designed for Garmin 20mm wide straps and is compatible with other 20mm wide straps. Package includes 5Pcs replacement watch ring and 5Pcs dust plugs (black color). ✅【Compatibility 20mm】Compatible with Garmin Forerunner 55/45/45S/245, fenix 7S/6S/6SPro/5S/5S Plus, instinct 2S, Approach S70-42mm, Swim 2, Active 5, Venu 2Plus/Sq2, Descent Mk2s, Epix Pro-42mm, and other 20mm wide straps. ✅【Width measurement】Garmin strap measure the width of the dial and strap connection is 20mm can be; other straps will have taper, the dial connection is wider than the middle part of the strap, please measure the width of the middle of the strap is 20mm can be. 🟢【Anti-dust Plug】Made of soft rubber, protect your charger port from dust, sweat. Eco-friendly silicone material, soft and skin-friendly, flexible and durable. The watch ring has a non-slip bump design, not easy to fall off. 📌【NOTE】The non-slip ring has rectangular bumps on the inside and cannot be applied to straps with a small round hole in the centre. Please feel free to contact us with any questions, we are happy to serve you. Package Included 5Pcs Black Silicone Watch Strap Loops,5Pcs Black Silicone Dust Plugs. Make sure your strap width is 20mm. Strap width measurement: Measure the width of the strap at the end with the buckle.