4.5″ Diameter • Trenchless Boring • Soil & Clay Cutting

The Porta‑Mole 4‑1/2″ Reamer is a compact earth‑boring cutter designed for enlarging pilot holes and creating clean, consistent underground pathways for water lines, irrigation, electrical conduit, and low‑voltage utilities. Built for use with Porta‑Mole tunneling machines, the 4.5″ reamer delivers precise cutting performance in soft soil, clay, and medium‑density ground conditions.

This size is ideal for residential and commercial utility installs, especially when running ½”–1″ conduit or pipe under sidewalks, driveways, slabs, and landscaped areas without trenching.

Key Features

• 4.5″ cutting diameter — perfect for small utility runs
• Designed for pilot‑hole enlargement
• Cuts through soft soil, clay, and mixed ground
• Compatible with Porta‑Mole boring machines (5.5 HP, 9 HP, 11 HP)
• Heavy‑duty steel construction for long service life
• Ideal for trenchless installs under concrete and hardscape
• Smooth cutting action reduces binding and drag