GB Pro-Top titanium is a durable replaceable sprocket nose bar designed and built for demanding professional users. Pro-Top is ideally suited for high-speed / high-powered chainsaws where light weight and extreme durability are required. Pro-Top bars are precision engineered from high-tech, lightweight titanium alloy steel for extra-long life and easy manoeuvrability.
Length 20 inch
Drive Link count 66
Pitch .404" 
Gauge .063"
Mount SN - D025
Model SN20-63VQ
Fits Stihl models with .404 drive sprocket:
044, 045, 046, 048, 056, 064, 066, MS440, MS460, MS461, MS500i, MS650, MS660, MS661
PLEASE NOTE: SN20-63VQ bar is not compatible with 3/8" pitch chain or drive sprocket, it requires .404 drive sprocket fitted to chainsaw.