Round shank for access in holes. Extra-long shank up to 300 mm for difficult and remote access. Inline Hardening Process - +100% Tip Life and +100% Bar Strength. Handle Material - Softer for more Comfort and still Chemical Resistant. Blade " tri-coating " treatment (Zinc-Nickel-Chromium) - 4x Corrosion Resistance. Handle 'Channel' - +10% Torque. Laser Marking - gives virtually Permanent Marking. CNC tip machining - gives better Screw Fit increasing Torque Transfer and Reducing Wear.