MECCANIXITY Speaker Grill Guides Plastic Black Ball Socket Type Dia 10.6mm for Speaker Parts Accessories Pack of 20

What is this? The audio net cover buckle, sub female buckle, is applied to the fixation of the speaker net cover frame and the bookshelves, boxes, and plays the role of dust prevention, decoration, etc. What will I get? The speaker grill guides, we provides here,is in size of: Female Thread: 10.8 x 10.5mm/0.43 x 0.41inch(Dia*H); Color: Black; In the package of: 20 x Speaker Grill Guides. Are there any advantages of the product? The speaker grill guides use durable hard plastic, with folding resistance, is the first choice for DIY audio accessories. Sufficient quantities for use and easy to install. How to use it? Steps of installation: 1. Just drill holes of appropriate size on the box and grill. 2. Press the two parts into their proper holes. What should I notice? All size above is measured by manual, please allow +/-0.1 inch error.