Unikut Step Drill Straight Flute 4-12mm C1818-5 and aluminium oxide which is

and aluminium oxide which is a little less aggressive providing a smooth finish and for stainless steel and materials below Rc35

Bramley Model 053 - 8" (200mm)

Oil Cap Finish: Black

Contains two base six lenses

- JZS131 2

Unikut Step Drill Straight Flute 4-12mm C1818-5 and aluminium oxide which isSTRAIGHT FLUTE STEP DRILLS The Titanium Nitride coating significantly increases the tool life by providing the following benefits: Increases 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. Sizes Included: 4 5 6 7 8 9 10 11 12mm Step Length: 3. 75mm Overall Length: 65. 5mm Shank: 6mm