The irw10502541 is a 13mm hss cobalt drill bit supplied in a pack of 5, representing the largest diameter in this range for heavy-duty applications in stainless steel and high alloy steels. This substantial size is ideal for large structural fixings, heavy-duty brackets, and mechanical assembly where maximum hole diameter is required. The 13mm diameter is commonly specified in construction, structural fabrication, and heavy engineering projects. With 5% cobalt content engineered throughout, this drill bit delivers outstanding heat and abrasion resistance, absolutely essential when drilling larger diameter holes that generate substantial friction and heat. The heavy-duty web construction provides exceptional strength and rigidity at this substantial diameter, ensuring reliable performance without breakage even under the most demanding conditions. The precision-ground 135 split point ensures immediate cutting action, effectively eliminating bit walk and guaranteeing accurate hole placement in tough materials. Features and benefits: 13mm diameter for heavy-duty structural applications pack of 5 suitable for professional users 5% cobalt for superior heat and abrasion resistance heavy-duty web for maximum strength at larger diameter 135 split point minimises wandering for precision results specifications: tip diameter mm : 13.0 Working length mm : 101 overall length mm : 151 pack qty.: 5 Diameter: 13.0Mm. Total length: 151mm.