2 Pack Replacement 18-Inch Semi Chisel Chainsaw Chain for Troy-Bilt TB4218 Chainsaw - (18 inch, 3/8" Pitch, 0.050" Gauge, 60 Drive Links) Please note: This is an UpStart Components Brand replacement part, NOT an OEM product. All mentions of brand names or model descriptions are made strictly to illustrate compatibility. All brand names and logos are registered trademarks of their respective owners. This product is not affiliated with any brands and is not covered under any warranties offered by the original manufacturers. Any warranties for this product are offered solely by UpStart Components. Replacement Troy-Bilt TB4218 Chainsaw Chain - 2 Pack 18 inch, 3/8" Pitch, 0.050" Gauge, 60 Drive Links - UpStart Components Brand High performance chain for smooth cuts. Engineered for precision, balance and safety for efficient cutting. Reduced vibration levels for consistent cuts and greater user comfort. Designed for durability to keep the chain sharper longer. Avoid injuries by replacing dull or damaged chains with a compatible with sharp new chain Please Note: The same saw can have different bar lengths so ensure you confirm the pitch, gauge, & drive links on your current bar. Not all bars take the same amount of links.