DOP91VX058GTA Loop-Saw Chain. Low Profile™ Semi Chisel Chain. 3/8" Pitch, .050 Gauge, 58 Drive Links Low Profile Saw Chain. Fits Tanaka model ECS-290, ECS-300, ECS-320, ECS-330, ECS-3301, ECS-3351, ECS-35, ECS-350, ECS-3500, ECS-3500B, ECS-351, ECS-355, ECS-356, ECS-370, ECS-405, TCS3401, TCS-3351-PFS Chain Saws.