1 x Turbo Rev More Hooking Power Non - Traditional Finger Insert - Clear - Large - Product Number TG111C L(Please note 1 insert per order - photo shows the two sides of the insert.)Turbo "Rev" is a revolutionary new finger insert device designed to beworn on the index and/or pinkie finger. Turbo "Rev" will slightly alterball reaction. When worn on the index finger, Turbo "Rev" will helpcreate more axis rotation providing a stronger hooking reaction on theback end of the lane. When worn on the pinkie finger, Turbo "Rev" willhelp reduce axis rotation causing the ball to stand up giving you amore even and controlled ball reaction. But most importantly, Turbo"Rev" is designed to protect your fingers from unsightly and painfulcalluses that may be created from excessive friction during release.Made from our softest blend of material, Turbo "Rev" is the ultimate inpower, comfort and control. Turbo Rev is available in four sizes: S, M, L, XL. Size Equivalent towhat finger grips you use: Small = 19/32 - 5/8, Medium = 21/32 - 11/16,Large = 23/32 - 3/4, XL = 25/32 - 13/16Shipping DiscountsWe give shipping discounts wherever possible. Please email us for details or wait for a revised invoice.