HF2 - Hole Saw, Carbide Tipped, 1-7/8" (48MM) - Malco This coupler features a 1/4"

This coupler features a 1/4" female flare connection on one end and a 1/4" male flare connection on the other

The tool works well with materials like galvanized steel

Ample Throat Clearance: Allows access over the front edge of the gutter

Extensions: 3"

Here are the key features based on the available listing

HF2 - Hole Saw, Carbide Tipped, 1-7/8" (48MM) - Malco This coupler features a 1/4"The Malco HF2 is a 1 7 8" (48 mm) Quick Action Carbide Tipped Hole Saw, designed for fast, clean cuts in a variety of tough and layered materials. Product Specifications: Model: HF2 Diameter: 1 7 8 inches (48 mm) Cutting Depth: 2 1 4 inches (57 mm) Thread Size: 5 8" 18 Material: Carbide tipped teeth with BiMetal body Compatible Arbor: Malco HA3 (Quick Connect) Compatible Pilot Drills: HH4 (HSS) or HH5 (Carbide Tipped) Key Features: Aggressive Carbide