3:1 Retrieve Ratio

protection guard

providing improved run time

Takes Binzel 36 style parts

TM520-5500

ITM Holemaker Spiral Step Drill Bits Accessories 3:1 Retrieve RatioThe Titanium Nitride coating significantly increases the tool life by providing the following benefits: Increased surface hardness to 85HRC. Ceramic surface, reducing friction by up to 30%. Especially resistant to cold welding. Suitable for cutting a wide range of materials Variants Code Product Name Specifications SD4 20MM HOLEMAKER STEP DRILL SPIRAL FLUTE, 9 STEPS, 3MM STEP LENGTH, 4 20MM Sizes: 4, 6, 8, 10, 12, 14, 16, 18, 20mm Step Length: 3. 0mm