Layout: 60 degrees x 5" x 40 degrees RG: 2.51" Differential: .034" M/b: .016" Surface: 3000 grit sanded Core shape: Asymmetric Manufacturer's Intent: The most iconic name in bowling has done something it’s never done before: introducing the Black Widow Tour V1, a revolutionary new version of the most dominant line in the game. For the first time in the Black Widow line, we’ve reengineered the iconic Gas Mask core by removing the flip block and reducing the differential by ove

Layout: 60 degrees x 5 1/2" x 40 degrees RG: 2.54" Differential: .055" M/b: .017" Surface: 1500 grit w/ Power Edge Polish Core shape:...

Layout: 60 degrees x 5 1/2" x 40 degrees RG: 2.47" Differential: .052" M/b: .019" Surface: 1500 grit w/ Factory Compound Core shape:...

Layout: 60 degrees x 5 1/2" x 40 degrees RG: 2.50" Differential: .043" M/b: n/a Surface: 1500 grit Power Edge Polished Core shape:...

Layout: 60 degrees x 5 1/2" x 40 degrees RG: 2.50" Differential: .053" M/b: n/a Surface: 2000 grit sanded Core shape: Symmetric...

Layout: 60 degrees x 5 1/2" x 40 degrees RG: 2.54" Differential: .058" M/b: .008" Surface: 1500 grit w/ Power Edge Polish Core shape:...

Layout: 60 degrees x 5" x 40 degrees RG: 2.53" Differential: .036" M/b: n/a Surface: 1500 grit w/ Power Edge Polish Core shape: Symmetric...

Layout: 45 degrees x 4 1/2" x 70 degrees RG: 2.49" Differential: .050" M/b: .016" Surface: 1500 grit w/ Factory Compound Core shape:...

Layout: 60 degrees x 5 1/2" x 40 degrees RG: 2.50" Differential: .056" M/b: .016" Surface: 1500 grit w/ Factory Compound Core shape:...

Layout: 60 degrees x 5 1/2" x 40 degrees RG: 2.49" Differential: .053" M/b: .017" Surface: 1500 grit polished w/Power Edge Core shape:...