Made with Metal ring fastner for treble side skin (Plastic sheet) 7mm. ideal for those looking for the 'Desi Sound'. Current stock is white, can be mounted on the High side or Bass side (masala required)*. Please take a measurement from the rim of the wood & add a 1/2" for allowance. Please let us know the size you require. We feel these are a better quality tilli head, compared to other makers. Ships the following business day!