Rotary 9523520. 20" .325 .058 PRO BAR 20 x .325 x .058, 78DL.  Replaceable tip. Mounting pattern K095. 

REPLACES OEM:

• PITCH: 0.3250"
• DRIVE LINKS: 78
• GAUGE: 0.0580"
• BAR LENGTH: 20"

Fits the following:

ALPINA/CASTOR: A-40, C-40, CP-41, CP-45, CP-540, CP-600, P-370, P-410, Pro Series 45, Pro Series 540, Pro Series 600, P460, P510
DOLMAR: PS460, PS510, PS5100, PS5105, PS540, 109, 110, 111, 115
EFCO: 147, 152, 156, 165
HUSQVARNA: 133, 154, 234, 238, 242, 246, 254, 257, 261, 262, 33, 336, 339, 340, 345, 346, 350, 351, 353, 357, 359, 36, 360, 362, 41, 435, 44, 440, 445, 45, 450, 455, 460, 466, 49, 50, 51, 545, 55, 550, 555, 57
JOHN DEERE: CS46, CS52, CS56, CS62
JONSERED: CS2145, CS2149, CS2150, CS2152, CS2153, CS2156, CS2159, CS2163, CS2240, CS2245, CS2250, CS2252, CS2253, CS2255, CS2258, 2050, 2051, 2054, 2055, 2149, 370, 410, 420, 425, 435, 45, 450, 451, 455, 49, 490, 50, 51, 510, 52, 520, 521, 525, 535, 590
POULAN: Farmhand Series, Predator Series, 2700, 2750, 2800, 285, 2900, 295, 3000, 305, 3050, 306SA, 310, 3100, 315, 3300, 335, 336, 4600, 4620
POWERHORSE: 190502, 190503, 190557, 190559
REDMAX: G390, G450, G455, G5000, G5300
REMINGTON: RM5118, RM5520
SOLO: 613, 614, 630, 631, 632, 633, 634, 635, 636, 637, 638, 639, 640, 641, 643, 644, 645, 647, 651, 652, 654, 656
TROY BILT: TB4620, TB4920, TB5018, TB5020