General description A108 HSS Straight Shank Jobber Drills are specifically designed for drilling stainless steel. These drills can handle depths of up to 4 times their diameter and feature a split point for improved accuracy. Technical specifications Drill Diameter: 5/16 in (approximately 7.94 mm) Flute Length: 75 mm Overall Length: 117 mm Point Angle: 135° Material: High Speed Steel Number of Flutes: 2 Finish/Coating: Steam Tempered Helix Type: High Helix Flute Type: Spiral Coolant Delivery: External Cutting Direction: Right Hand Drill Diameter Tolerance: h8 Shank Diameter Tolerance: h8 Standards Met: BS 328, DIN 338 Other information