Irwin HSS Long Pro Drill Bits

This 4mm Irwin HSS Long Pro Drill Bit is a workshop staple, perfectly sized for a broad range of general drilling applications. Ideal for installing fixings, mounting equipment and fabrication work, this popular size delivers reliable performance across low carbon steel, soft metals, wood and plastics. Manufactured from high quality HSS steel with a bright finish, this drill bit features precision ground cutting edges that enable fast drilling whilst ensuring perfect finishing. The ground flute design maximises accuracy and facilitates rapid chip removal, whilst the universal 118° point shape provides versatility for varied materials and applications. Manufactured to DIN 340 standards with a cylindrical shank, this long series drill bit comes in a bulk pack of 10, making it an economical choice for busy workshops and contractors who demand consistent quality and performance.