Dormer Pramet R454 4.40 mm CARBIDE TIALN FORCE-X STEPPED SHANK STANDARD SERIES (X5D) DRILL DIN 6537 L Step Drill data-backed decisions on fit and

data-backed decisions on fit and performance

optimized for accurate British-style threads

This reamer is engineered to deliver consistent hole diameters and a high‑quality finish across production runs

Go/No-Go design: Combines a go end that should thread into the part by hand (without excessive force) and a scrap end that must not thread in more than two turns

It targets machinists and workshop pros who demand consistent bore size with tight tolerances

Dormer Pramet R454 4.40 mm CARBIDE TIALN FORCE-X STEPPED SHANK STANDARD SERIES (X5D) DRILL DIN 6537 L Step Drill data-backed decisions on fit andThe Dormer Pramet R454 4. 40 mm carbide drill is a precision drilling tool designed for reliable holes across steel, aluminium, and stainless steel. Featuring a DIN 6537 L stepped shank, it is ready for quick changes in common drill heads and fixtures, making it suitable for both production runs and workshop applications. With a focus on accuracy and consistency, this drill can deliver clean holes with h9 tolerance even at higher speeds and feeds.