Desic Diamond Core Drill Holesaw With Pilot 38mm AB3624-13 1/2" Drive Impact Extension Set

1/2" Drive Impact Extension Set 3"

72 Teeth Gear for Optimum Fastening Efficiency

Heavy duty tray

Linkage Bearing Kit all Balls KLX140 08-18 KLX140G 17-18 KLX140L 08-18

Spindle Size: m10x1

Desic Diamond Core Drill Holesaw With Pilot 38mm AB3624-13 1/2" Drive Impact Extension SetThese are good for a variety of trades where you need to make a big hole in materials that are normally difficult to drill. The metal bonded diamond segments last a lot longer (about 50x more) than diamond coated holesaws because the diamonds are embedded throughout the segment and fresh ones are exposed as the bonding metal wears away. The replaceable pilot drill gets the hole in the right place in materials where you'd normally use a masonry drill.