A191 31M 20 Piece HSS Jobber Drill Bit Set

The Dormer A191-31M is a precision HSS jobber drill bit set designed for fine drilling applications in metalworking and engineering tasks. This 20-piece set covers micro-diameter drilling requirements from 0.3mm to 1.0mm, making it ideal for precision work where accuracy is critical. Manufactured in France to DIN 338 standard, this set features high-speed steel (HSS) construction with a steam tempered finish for enhanced durability and heat resistance. The A100 type drill bits are suitable for use with both hand drills and machine tools, providing versatility across different workshop setups. The set includes incremental sizes in 0.05mm steps between 0.3mm and 1.0mm, plus additional sizes at 0.38mm, 0.52mm, 0.58mm, 0.78mm, and 0.82mm. This comprehensive range is particularly useful for precision engineering, electronics work, model making, and specialist metalworking applications where standard drill bit sets don't offer the fine diameter control required. The compact metal case measures just 124mm x 60.3mm x 6mm, making it convenient for toolbox storage and transport between job sites.

Features and Benefits:

• HSS construction suitable for drilling various metals and hard materials
• Steam tempered finish improves tool life and wear resistance
• Manufactured to DIN 338 standard for reliable performance
• Comprehensive 20-piece set covers fine drilling requirements from 0.3mm to 1.0mm
• Compact storage case ideal for workshop or mobile use

Specifications: Diameters: 0.3mm - 1.0mm x 0.05mm + 0.38mm, 0.52mm, 0.58mm, 0.78mm, 0.82mm Type of Drill: A100 Number of Pieces: 20 Country of Origin: France Material: HSS Standard: DIN 338 Weight: 0.03kg Finish / Coating: Steam Tempered Pack Dimensions: 124 x 60.3 x 6mm