Check the listing for details. 20 Medium Black Round Locator Bumps , Bump Dots. Condition: New. Listed at 12.99 USD. These soft plastic self-adhesive bump dots can be placed in a variety of places for tactual identification of everyday items. Black bump dots can be used on computer keyboards, musical keyboards, telephone keypads, television keypads, remote control keypads, and more. Peel and stick adhesive bump dots onto any clean, non-porous, flat surface. Twenty bump dots come in every package. Size: .620 wide x .310 tall. Product dimensions (imperial): 0.62 inch H x 0.31 inch L. Product dimensions (metric): 15.75 mm H x 7.87 mm L. 20 dots per pkg. Features: * Color: Black * Shape: Round center dot * Measurements: 15.75 diameter x 7.87 high * 20 self-adhesive dots per package * Mark appliances, electronics and more * Great tool to help the blind live more independently * 3M Adhesive Model: 164723 Shipping Weight: 1 lbs. Manufactured by: 3M