Tifco - DuraMaxx Coated Step Drill, 1/4-1 3/8 by 1/16, 51421

Tifco DuraMaxx Coated Step Drill — 1/4" to 1 3/8" by 1/16"

Stop swapping bits mid-job. The DuraMaxx Coated Step Drill (Part #51421) covers 19 hole sizes in a single tool — from 1/4" up to 1 3/8" in precise 1/16" increments — so you stay on the work, not hunting through your bag.

Built for the Field

• Wide size range: 1/4" to 1 3/8" in 1/16" steps — one bit handles what a full set used to
• Durable coating: Wear-resistant finish extends tool life and reduces heat buildup during extended use
• Clean, burr-free holes: Engineered geometry minimizes burring in metal, plastic, and composite materials
• Reduced setup time: Eliminates bit changes between sizes on multi-hole layouts

Ideal Applications

• Electrical installation and conduit work
• HVAC panel and enclosure fabrication
• General metal fabrication and sheet work
• Plastic and composite panel drilling

SKU: 51421 | Vendor: Tifco | Type: Step Drill Bit