This is a Full Skip Chain, it is different from normal Chisel chain in that there are less cutters, this help maintain engine rpm when using longer bars. 

(1) 28" Chainsaw Chain for
Husqvarna X-CUT C83

Specs:
Full Skip 
3/8" pitch, .050 gauge, 
93 Drive Link

Replaces OEM Numbers:
585550093   501842693   591129993

An advanced, full skip, high-performance 3/8" .050 gauge chain for full-time professional forestry saws. The chain is made entirely to ensure you get the best possible output from your chainsaw. With its outstanding durability and cutting efficiency, a sharpness that lasts and low stretch, it gives you better results, less need for maintenance and lower costs. 

Fits Husqvarna Chainsaw models with 28" Bar: 

555, 562XP, 365 / 565, 372XP / 572XP, 
576XP, 390XP, 395XP, 3120XP.