Copperhead 7221057 Chain Saw Chain .050 3/8 57 Links Low Pro Semi-Chisel Length_21-1/4" They are exceedingly safe because

They are exceedingly safe because they use a valve regulator to safely vent pressure

Fits Velke

9873 (Spark Plug) and 4229H (20W-50 Oil)

Colorado Potato Beetles and other listed insects

Raptor XD 54"

Copperhead 7221057 Chain Saw Chain .050 3/8 57 Links Low Pro Semi-Chisel Length_21-1/4" They are exceedingly safe becauseRequires 5 32" File Replaces CARLTON: N1C BL 57G STIHL: 63PM3 57 Fits Models ECHO POWER PRUNER: CS 370, CS355T, CS 345, CS 315, CS 301, CS 302 (after 0015304), CS 352, CS 330T, CS3400, CS 351 (after 0112195), CS 303T, CS 305, ECS2000, CS 300, CS 290, CS3450, CS330MX4, CS 400, CS 340, CS 310, ECS3000, CS3000, CS 346, CS 306, CS360T, CS 280, CS 341, CS SHINDAIWA: 110, 357, E305AV, 90, 150 Electric, 352, 106 Electric, 104P, 345, 360, 140, 350, 120, 100,