GROZ HC-21L locking LONG GREASE COUPLER 1/8" BSPT is an excellent choice for professionals who need a reliable and easy-to-use grease coupler for tight and difficult lubrication points. This long model (neck length 80 mm, diameter 17 mm) allows easy access to deeper or recessed grease nipples. The unique 6-point locking mechanism with ball bearings enables fast and secure attachment to the grease nipple and easy release, even under pressure (max 550 bar). The locking mechanism frees your hands for work, significantly improving lubrication efficiency. This makes the coupler ideal for contractors, maintenance technicians and workshop professionals working with agricultural machinery, construction equipment or industrial machines. GROZ HC-21L combines durability, ease of use and efficiency, making it a valuable tool for daily lubrication. Its 1/8" BSPT thread is a common standard, ensuring compatibility with most grease guns.