The Milwaukee 20 in. .325 in. Pitch,.050 in. Gauge Guide Bar is designed with a durable multi-rivet nose and 12-tooth design to withstand tough bore cutting applications. The narrow kerf bar offers more cuts per charge versus standard kerf bars to maximize battery efficiency. This bar is recommended for use with the M18 FUEL 20 in. Dual Battery Chainsaw (2827-22) and 20 in. .325 in. Pitch,.050 in. Gauge Saw Chain (49-16-2752) and fits chainsaws with a K095 Tail Mount and 20 in. narrow kerf chains with the same pitch, gauge, and drive link count.