DOP180ATMZ095JO 18" .050 Gauge Laser Tip Chain saw Bar fits Jonsered Chainsaws. Solid nose with wear-resistant alloy laser welded around the tip. Fits Jonsered model 2051, 2055, 2063, 2149, 2149 Turbo, 2159, 2163, 370, 410, 420, 425, 435, 45, 450, 451, 455, 49, 490, 50, 51, 510, 52, 520SP, 521, 525, 535, 590, CS 2159, CS 2159C, CS 2159CWH, CS 2159WH Chainsaws.