UB11 - Malco - STEP DRILL, 1/2" (1EA) smooth operation

smooth operation

M12A  for pattern

Pointed bottom blade easily pierces duct to start cut

The Malco RRW6 Offset Ratchet Wrench is a compact

UB11 - Malco - STEP DRILL, 1/2" (1EA) smooth operationMalco UB11, STEP DRILL, 1 2" Malcos UB1, UB3, UB11, and UB20 Step Drills offer a unique double flute design to ensure the penetration of soft or thin materials at the proper speed. These step drills, drill hole sizes from 1 8 to 1 through sheet metal without burring or deforming stock or threading drill bit. Malco Step Drills actually de burr as they drill. Perfect for use as a hole opening reamer. They can also be used for making round holes from