Check the listing for details. MDF Speaker rings, 10" flush mount. Condition: New. Listed at 15.00 USD. Here is a flush mount MDF ring that will accommodate most 10" subwoofers. This listing is for one ring. IF more are needed just mark the quantity that you need. Shipping will be reduced for multiple quantities. Specs are as follows: 1" thick Overall diameter 11.4" Mounting hole diameter 9.125" Step diameter 10.7" Step depth .4" Please check your measurements to make sure these rings will work with your speakers. All rings are CNC machined for perfect accuracy. Please feel free to ask any questions you may have or to inquire about custom sizes for your particular needs. Check our my other listings for top quality enclosures. Thank you for your interest. Please Note: The shipping charge is for the contiguous US only. If you live in Alaska, Hawaii, or Puerto Rico, Please contact me in advance of purchase in order to get the correct shipping rate for those locations as there will be an additional charge. Thank You.