Double worm screw. Universal (standard) type Drain Rod Attachment
Part No. DR42011
Overview:
The Double Worm Screw is a universal drain rod attachment for clearing stubborn blockages in pipes and sewers. Built from steel for strength and durability, it features a twin-helix "worm" head that pierces and gathers soft obstructions, helping you pull debris back towards the access point. Its standard universal fitting connects to most UK drain rods, making it suitable for tradespeople, facilities teams, and DIY users. At 133mm long, it offers a compact profile that balances reach and control in tight runs, gully pots, manholes, and inspection chambers. The 7.5mm coil diameter provides a firm bite on rags, wipes, leaves, and similar materials, while the robust threaded socket delivers a secure, reliable connection during rodding work.
Key Features:
- Universal, standard drain rod fitting for broad compatibility
- Steel construction for toughness under repeated use
- Length: 133mm for controlled rodding in confined spaces
- Coil diameter: 7.5mm for effective penetration and retrieval of soft debris
- Thread outer diameter: 21.5mm; thread inner diameter: 16.5mm for a secure fit
- Double-worm head shape grips and pulls back obstructions
- Simple to attach and remove for quick on-site changes
- Suitable for domestic, commercial, and site drainage maintenance
- Smooth, consistent wind on the coils to reduce snagging on the way in
- Reliable performance when used with standard clockwise rodding techniques
Typical Applications:
Clearing rags, wipes, paper, leaves, and similar soft blockages in household drains, external gullies, inspection chambers, and sewer laterals. Useful for maintenance teams, plumbers, and grounds crews who need a dependable tool for routine unblocking, pre-jetting preparation, and retrieving debris that resists simple plunging.
Also known as:
Double-helix auger head, corkscrew rod end, rag retriever, universal auger attachment, drain rod screw end, sewer line screw head, blockage retriever, twin-spiral screw, pipe auger head.
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