M16 screws are the most widely used screws in the current sex doll industry. It is compatible with a series of brands such as WMDoll, Real Girl, Irontechdoll, etc., making it a versatile choice for users. Manufacturers consider interchangeable heads when producing dolls, designing interchangeable heads for customization and versatility in appearance. Currently, there are three types of M16 bolts: standard double thread bolt, single thread bolt, and multi-angle rotating link screw.ラブドール

1: Standard double thread bolt
This standard threaded bolt is a previously widely used head connector. It is double threaded so either side can be used to connect with the doll's head or body. It is almost unused now.

2: Single thread bolt
Single thread bolts are common head connectors. This is compatible with all sex doll heads with older M16 connectors. This head connector allows you to easily change doll heads without having to rotate the head. It's easy and quick.

3: Multi-angle rotating link screw (Currently the most commonly used head connector screw) Sex Doll
One end can be inserted into the main body and head, and the central link part has a ball lock that allows the head to be rotated to multiple angles. Please refer to the image below to show the specific detail effect. Please follow the steps below during operation:

1. Find the connecting screw: Usually the connecting screw is located at the bottom of the doll's head and is connected to the doll's neck. Of course, some manufacturers leave accessories in bags, so check all product accessories carefully.

2. Align the head and body: Before inserting the connection screw, adjust the orientation to ensure the head and body are properly aligned. The doll's neck should fit neatly into the groove at the bottom of the head.

3. Directly insert the connecting screw: Insert the screw into the hole at the bottom of the adult sex doll's head and rotate it clockwise to secure it firmly. Be careful not to overtighten the screws. Otherwise, the doll may be damaged. At the same time, if it is too loose, please give it one more turn or half a turn to ensure the head is connected and fixed correctly.

4. Check the connection status: After the screw is installed, pull the head lightly to make sure it is firmly connected to the main body. If the head shakes or is loose, please retighten the screws slightly.

Unlike traditional bolts, this upgraded connection screw greatly improves the doll's range of motion and overall structure. This allows for more realistic head movements and greater versatility. This advancement removes the limitations of simple tilting and lowering the head, allowing for more expressive poses.

It should be noted that the specific design and size of the head connection screw may vary depending on the doll brand and model. If you have any questions, please feel free to contact us and we will be happy to answer your questions.