The Krobahn Telescopic Basin Wrench (KB-BWTA0030) is an adjustable wrench with a telescoping handle and pivoting head designed for installing and removing nuts in hard-to-reach spaces under sinks and baths. It has a jaw capacity of 10mm to 30mm. 
Product Details
Material: The adjustable jaw is manufactured from forged steel with a hardness of up to 40 HRC.
Jaw Capacity: 10mm to 30mm.
Length: The handle is telescopic, extending from 270mm to 450mm in four steps (270, 330, 385, and 450mm) for increased reach.
Head Design: Features a spring-loaded jaw for an automatic grip and a 180° turning capability for flexibility in tight spaces.