Our 10″ 3/8″ LOW PROFILE Pitch, .043″ Gauge Guide Bar is engineered with light materials for easy maneuvering. Designed with a smaller radius nose for easy access in tight spaces. The narrow kerf bar offers more cuts per charge versus standard kerf bars kerf to help maximize battery efficiency. This bar is recommended for use with our M18 FUEL 10″ Pole Saw w/ QUIK-LOK (2825-20PS), M18 FUEL QUIK-LOK 10″ Pole Saw Attachment (49-16-2720), and 10″ 3/8″ LOW PROFILE Pitch, .043″ Gauge Saw Chain (49-16-2723) and fits saws with an A041 tail mount & narrow kerf chains of the same pitch, gauge, length, and drive links.