For other products, please contact the shop’s customer service for a customised consultation. Available materials: ceramics, microcrystalline stone, granite, ceramic tiles, ordinary glass, marble, vitrified bricks and other materials for drilling. Note: water cooling is required throughout the use, and tempered glass is prohibited. Prohibited materials: tempered glass. Compatible equipment: electric drill, bench drill. Diameter 25mm: 4 pipes (generally tap water pipes and water heater pipes). Diameter 32mm: 6 points in charge (generally tap water pipes and water heater pipes). 40mm diameter: 1 inch pipe. Diameter 55mm-63mm: 1P-2P air conditioning ducts and toilet ducts. Diameter 76mm: 2P-5P air-conditioning cabinet pipe. When manufacturing parts, to make them interchangeable, the parts should be within the specified maximum and minimum limits. The permissible size variation is: tolerance, but they all fall within the scope of the industry regulations. Contact online customer service for information on specific tolerances. When the product is ordered, the tolerance is accepted by default. According to your Choose! Terms of sales. If you are not satisfied with the item, please contact with us. Any problem, please feel free to contact with us. We care about our valued buyers, if you have any questions, our Customer Service staffs will be very glad to help you. We try our best to reply to your emails as soon as possible, however, due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. About item:For the functional products in our shop, we make sure that the functions are the same as description, but the actual color and shape may looks a little different from pictures because of the technical improvement and manufacturing variance. Do you want to shop around the world easily and to your heart’s content? Just come to my store! It’s like your own private global shopping paradise, making it easy to shop the world from home! When we got your message that we will reply you ASAP. Product is on sale, you can get coupons and place order normally. And due to many factors, flights have been reduced, causing international logistics delays. We realy hope you can understand that. If you have any comments and suggestions, are welcome to tell us oh! Make every shopping trip a great experience for you. The product should be within the maximum and minimum limit dimensions specified during manufacture in order to make the parts interchangeable. The permissible dimensional variations are called. The tolerances of products for sale are divided into positive and negative tolerances, with specific tolerance values varying according to the classification of the product, but all within the limits set by the industry. Please consult online customer service for specific tolerances. If a product is ordered, this tolerance is considered to be accepted by default. Select option 1 and option 2 or option 3 of the product…. Function allows you to change the required quantity. Default: “1”, if the quantity is not enough, you can contact customer service. Even if you want to order more varieties from this link, you must first set all selection fields to. Do not pay separately. If you are not sure, contact customer service in time.