Fit "A" Taper Drill Tools or Adapters.
CRL Thundertwist "A" Taper Impak Drills are best for electric and pneumatic hammer drills.
The high quality standards of their manufacture and testing assures you of long drilling life and top performance.
They give superior drilling results in limestone, brick, cement, marble, concrete, granite, tile, slate or cinder blocks.
"A" Taper Adapters allow you to use these bits in hammer drills requiring uni-shank or spline shank drills.
Size: 5/16 x 6 in (7.9 x 152.4 mm)