Top best buy Spline-Shank Bits br br 1. Bosch HC8070 Spline Shank Core Bit 5 x 7 x 12 br br 2. Bosch Carbide Spline Shank Core Bit 4IN #HC8055 br br 3. Bosch HC8045 Spline Shank Core Bit 3-12 x 17 x 22-Inch br br 4. Bosch HC8015 Spline Shank Core Bit 2 x 17 x 22-Inch br br 5. DEWALT DW5764 1-12-Inch by 17-Inch by 22-Inch 4-Cutter Spline Shank Rotary Hammer Bit br br 6. Makita 711439-A Spline Shank Bits for Cutter, 34-Inch by 36-Inch br br 7. DEWALT DW5731 1-12-Inch by 11-Inch by 16-Inch 2 Cutter Spline Shank Rotary Hammer Bit br br 8. DEWALT DW5756 1-Inch by 17-Inch by 22-Inch 4 -Cutter Spline Shank Rotary Hammer Bit br br 9. Bosch HC4041 Wild Bore Head Spline Shank Bit 78 x 16 x 21-Inch br br 10.