Check the listing for details. Vise Ultimate Vinyl Thumb Insert. Color: Black or White, Condition: New. Listed at 10.93 USD. Vise Ultimate Vinyl Thumb Insert Upgrade your bowling game with the Vise Ultimate Vinyl Thumb Inserts. These pre-drilled inserts are designed for bowlers seeking a custom and comfortable grip, enhancing their overall performance. Key Features: Available in Round or Oval shapes. Choose from Black or White colors to match your style. 1 1/8" outer diameter: Fits thumb sizes 51/64" - 63/64". 1 1/4" outer diameter: Accommodates thumb sizes 1 - 1 7/64". Benefits: Customizable Fit: Pre-drilled for convenience, ensuring a precise fit. Style Choices: Choose the shape and color that suits your preferences. Enhanced Grip: Experience a comfortable and secure grip for improved performance. Sold Individually: Choose the color and size that fits your needs. Invest in the Vise Ultimate Vinyl Thumb Insert for a personalized and high-performance bowling experience. Upgrade your gear today!