The black and decker a6158 is a replacement chainsaw chain designed for use with the black decker gpc1800, gkc1817, and gkc1820 cordless chainsaws. Keeping your chainsaw chain in good condition is essential for safe, efficient cutting. When your existing chain becomes worn or damaged, fitting a genuine black decker replacement ensures your saw performs as intended, maintaining the cutting accuracy and reliability these cordless models are known for. The a6158 is the correct specified replacement for three popular black decker cordless chainsaw models, making it a straightforward choice for owners looking to restore their tool to full working order. Fitting a compatible, manufacturer specified chain helps preserve the integrity of the guide bar and drive sprocket over time. Features and benefits bull genuine black decker replacement chain for assured compatibility bull suitable for gpc1800, gkc1817, and gkc1820 cordless chainsaw models bull chrome construction for durability and cutting performance bull restores saw to manufacturer specification when fitted correctly