Draper Brick Line and Block Set

Amazon

Durable - 18m of highly visible polyethylene line, designed to endure harsh weather conditions. Convenient - Comes with 2 L-shaped blocks to keep the line firmly in place and prevent tangling. Draper Quality - Reliable Draper Tools quality guaranteed, Weight: 0.24 Pounds, Manufacturer: Draper

ManoMano

Comprising two impact resistant plastic guide blocks and approximately 18 metres of polyethylene line Display packed This is a Draper product.

Electrical World

Comprising two impact resistant plastic guide blocks and approximately 18 metres of polyethylene line. Display packed.