Lightweight and portable for use anywhere on 14" to 20" chainsaws. Single sharpening stone in unit. (Supplied with 2x spares.) A few seconds and the teeth will be back to full sharpness. Just a few drops of oil and it is ready to use. Features & Benefits:Lightweight and portable for use anywhere on 14" to 20" chainsaws (except Echo 16).Single sharpening stone in unit. (Supplied with 2x spares.)A few seconds and the teeth will be back to full sharpness.Just a few drops of oil and it is ready to use.Protects your hands from injury.Model No. CS01S Specifications: Model No CS01S Brand: Sealey Chain Sizes: 14, 16, 18, 20" Consumable Parts: Sharpening Whetstone - Model No. CS01SW Free Speed: N/A Motor Power: N/A Nett Weight: 0.34kg