General description Pieces Chainsaw Chains are designed for 4-inch cordless electric mini chainsaws. This pack includes four replacement chains that ensure high performance and durability. Technical specifications Length: 4 inches Drive Links: 28 Kerf: Narrow kerf cutting systems Compatibility and accessories Compatible with all brands of 4-inch mini chainsaws Installation Turn the screw to remove the original chain Replace with the new chain and tighten the screw Usage Designed for efficient cutting with dual cutting angles for safety and performance Narrow kerf design requires less drive energy