Layout: 60 degrees x 5 1/2" x 40 degrees RG: 2.50" Differential: .053" M/B: .013" Surface: 3000 grit sanded Core shape: Asymmetric The...

by Jeff Ussery at Total Bowling Gear Layout: 60 degrees x 4 1/2" x 40 degrees RG: 2.48" Differential: .050" Surface: 1500 grit polished...

by Jeff Ussery at Total Bowling Gear Layout: 60 degrees x 5" x 40 degrees RG: 2.52" Differential: .054" M/B: .019" Surface: 1500 grit...

Layout: 45 degrees x 4 1/2" x 70 degrees RG: 2.49" Differential: .029" Surface: 3000 grit sanded Core shape: Symmetric This one is an...

Layout: 45 degrees x 4 1/2" x 70 degrees RG: 2.52" Differential: .049" Surface: 1500 grit polished Core shape: Symmetric Storm's brand...

Layout: 30 degrees x 4 1/2" x 30 degrees RG: 2.51" Differential: .030" Surface: 1500 grit polished Core shape: Symmetric Storm's brand...

Layout: 45 degrees x 4 1/2" x 70 degrees RG: 2.50" Differential: .052" Surface: 3000 grit sanded Core shape: Asymmetric What I wanted...

Layout: 45 degrees x 4 1/2" x 70 degrees RG: 2.48" Differential: .051" Surface: 1500 grit polished (factory finish) Core shape: Symmetric...

Layout: 60 degrees x 5" x 40 degrees RG: 2.57" Differential: .046" Surface: 4000 grit sanded Core shape: Symmetric What I wanted from...

Layout: 60 degrees x 4 3/4" x 40 degrees RG: 2.48" Differential: .052" Mass Bias: .020" Surface: 2000 grit sanded Core shape: Asymmetric...