Ductsure Door Relief Vent Grille (Anodized Aluminium) – DG-A 600350 Insize Range 90° Square 50x40mm Series 4707-50 Thread Size: M33 x 3mm Somta Series 107 – 1/16 - 1/2" X 1/64 Jobber Drill Set The optional setting ring 1103-200

Thread Size: M33 x 3mm (Fine Pitch)

Applications: Internal Thread Turning for Whitworth Threads in Mechanical and Piping Components

Supplied extensions from 170 mm to 200 mm in 10 mm increments

✅ Compatible with Leading Drill Brands – The standard shank ensures effortless integration with standard drills

Central mechanical lock for all joints

Ductsure Door Relief Vent Grille (Anodized Aluminium) – DG A 600350 Insize Range 90° Square 50x40mm Series 4707 50 Thread Size: M33 x 3mm Somta Series 107 – 1 16 1 2" X 1 64 Jobber Drill Set The optional setting ring 1103 200 Thread Size: M33 x 3mm (Fine Pitch) Applications: Internal Thread Turning for Whitworth Threads in Mechanical and Piping Components