MASC special expansion cone with triangular shank for rainwater downpipes, available in 60-120 mm

✔ NEW: Triangular shaft – even more flexible for use with manual drive or machine mounting
✔ For standard downspouts (folded, welded, and more) – uniform expansion without distortion
✔ Patented gear system with automatic feed & return – fast, controlled, labor-saving
✔ Ideal for creating slip couplings – clean fit, professional connection, less rework
✔ Robust, lightweight aluminum design – the perfect 1-man tool for the construction site and workshop

MASC – Special expansion coner with triangular shaft now available

Efficient expansion for precise pipe connections

When you want to work cleanly in the area of gutters, downspouts, and drainage, every detail counts – especially for snug-fitting couplings and dimensionally stable pipe ends. The MASC special expansion coner with triangular shaft is designed for exactly that: it expands downspouts quickly, evenly, and without unnecessary loss of force. The integrated, patented gear system handles the automatic feed and return – you work in a controlled, repeatable, and significantly faster manner, whether on the roof or in the workshop.

NEW: With triangular shaft – even more flexible in use

The new version with a triangular shaft noticeably expands your drive options. You can use the coner flexibly with compatible mounts or manual drives – ideal if you want to pick up the pace for series installations or maintain maximum efficiency on the construction site. This makes this roofing tool and sheet metal tool a genuine upgrade for your daily needs in roofing and sheet metal supplies.

Practical application

The MASC coner is inserted into the pipe end and ensures even expansion thanks to its conical shape and automatic feed. This is how you professionally produce slip couplings, prepare pipe connections, or realign downspout elbows. Especially with demanding materials, the pipe geometry remains stable – perfect for precise assembly and leak-proof transitions.

Technical details at a glance

• Shaft: Triangular shaft (NEW) for flexible drive

• Pipe types: standard downspouts (folded, welded, etc.)

• Materials: Zinc, copper, aluminum, Uginox

• Gear system: patented, automatic feed & return

• Area of use: Construction site and workshop, 1-man tool

• Construction: lightweight, robust aluminum construction

Now available in the Roofing Shop – from your Roof specialist Roofify.

Recommended areas of application

• Production of slip couplings for professional downspout connections
• Preparation of pipe ends during the installation of rain drainage systems
• Aligning downspout elbows before installation
• Series installations where a controlled workflow is required
• Repair and adjustment work on existing downspout systems

Frequently asked questions

Important features and technical specifications

• Available pipe sizes: 60-120 mm
• Shaft: Triangular shaft for use with manual drive or MASC machine
• Gear system: patented gear system with automatic feed and return
• Suitable pipe types: standard folded and welded downspouts
• Suitable materials: Zinc, copper, aluminum, and Uginox
• Construction: lightweight, robust aluminum construction