Describe: Usage Method: 1.After opening the wrench, place the suction cup flatly against the area subjected to force. 2.Then, turn the wrench back on the suction cup and secure it firmly. 3.Check if the suction cup is securely attached.. Notes: 1. This product is for adult use. Individuals under the age of 18 are not allowed to purchase or use it. 2. After use, to prevent the product from deteriorating, please wipe it clean before storing. 3. For the first use, it is recommended to adjust the appropriate size to enjoy a comfortable experience. 4. This product must not be exposed to direct sunlight or placed in a humid environment. 5. Users with high-risk diseases such as hypertension, heart disease, and asthma should not use it! Comments: 1. Manual measurement tolerance is 1 to 2 cm. Please do not mind. 2. Due to differences between various displays, the color of the picture may not accurately reflect the actual color of the product. Please refer to the actual item. Thank you very much! Package Includes: 1 *sm suction cup handcuffs