Material: Zinc alloyColor: White and GoldPitch-row: Single holePackage: 1 personal computer knob + screw(default 25mm length)Note:1. Due to guide measurement, there could also be an error between 1-3 mm, please understand.2. The colours can have different as the difference display, pls understand.3. Default screw size is 25mm, if you need different length, please go away a message when paying the order.How to make your mind up the size of the screw: the thickness of the board plus five mm is probably the most right screw length.4.If the product you obtained is damaged, please don't open the dispute,We will reply to all our prospects and resolve the issue that you have.Dispute will not help to solve any problem, thank you.5. The seller isn't liable for customs duties and different fees!