Check the listing for details. Turbo Ms. Quad Bowling Ball Finger Insert. Color: Black, Clear, Pink, White or Yellow, Condition: New. Listed at 6.84 USD. Turbo Ms. Quad Finger Insert Experience optimal grip and comfort with Turbo Ms. Quad Finger Insert. Our patented design ensures a clean installation and prevents glue seepage. Helpful size indicators on the outside and inside make it easy to find the perfect fit. Perfect Oval Milled Oval with Smooth or Mesh Surface - designed as a true, milled oval shape. This oval shape is flat through the center and is the most like the shape of your fingertip, giving you a very natural and relaxed fit. Use the mesh textured surface for a tackier feel. Power Oval Power Oval has 1/8" forward pitch for a more subtle increase in loft. The finger pad has a contoured shape and smooth surface, ideal for most bowlers. 7/8" Standard diameter for grip sizes 17/32" - 3/4" (#-1 - 6). 15 sizes available in 5 color options. 40 Shore A durometer hardness. Sold Individually. Upgrade your bowling experience with Turbo Ms. Quad Finger Insert. Choose the perfect fit and enjoy enhanced performance on the lanes.