br new high quality Features:Thumb finger rest is made rubber material, with high flexibility, comftable wearing feeling. It is tear-resistant durable.It makes you feel comftable, easy to use. F 14.5-17.5mm Diameter Thumb are suitable universal.Rubber protect can be eliminate thumb pain, protect extra thumb rest protect your instruments h.Wonderful term to rest your thumb bring you better playing perfmance.Its special shape design fits your metal thumb rest very perfectly. Specifications:Material: Stainless SteelandRubberCol: As The Picture ShowsPackage Weight: approx.14gThumb Rest Size: approx.27x16x20mm/1.1x0.6x0.8in (LxWxH)Protect Size: approx.20x15mm/0.8x0.5in (DiaxThick) Note:Please allow 1-3mm err due to manual measurement. Please make sure you do not mind befe you bid.Due to the difference between different monits, the picture may not reflect the actual col of the item. Thank you Package Includes:1Pc x Thumb Rest1Pc x Rubber Cushion2Pcs x Screw