Pluggy Lock Twist-and-Go Lock Earphone Jack Accessory (Black) Simply twist it and it becomes a strap hole. Holds up to 3kg! Customize your smartphone with your favorite strap. You simply put it on a smartphone or tablet PC and twist it. PLUGGY LOCK is an earphone jack which can easily provide you with a strap hole. Even if your device doesn't have a strap hole, you can customize with your favorite strap without a case. The maximum weight it can hold is 3kg. You can attach strap or neck strap without worrying about the phone falling off. Also, you can attach a thin hook part or ball chain. Bright metallic color will be a great accent for your fashion. You simply put it on your smartphone or tablet PC and twist it. Special mechanism makes the rubber on the tip expand to fasten. Even if your device doesn't have a strap hole, you can customize with your favorite strap without a case. Holds up to 3kg. You can attach strap or neck strap without worrying about your device falling off. It won't come off easily even if you pull it softly. With a verification test, it was able to hold up to 3.2kg.