Suitable for the following Stihl models of Chainsaw: 009, 010, 015, 018, 020, 021, 023, MS170, MS170D, MS171, MS180, MS181, MS191, MS192 MS200T, MS210, MS211, MSE 140C, MSE 160C, MSE 180C, MSE 200C and MSE 220C The starter kit includes everything you need to get started with the PowerSharp precision saw chain sharpening system: PowerSharp chain, bar-mount sharpener, sharpening stone, and the PowerSharp guide bar Features Bar-mount sharpener is small, lightweight, and portable. Clamps easily to bar tip. PowerSharp guide bar has the alignment and latch pin holes required for use with the bar-mount sharpener. Chain features top-sharpening cutter design that can be sharpened in seconds, with the bar-mount sharpener. All PowerSharp chain is low-kickback per ANSI B175.1 & CSA Z62.3. Spec Bar: 91 Low Profile pitch; laminated body; non-replaceable nose sprocket; small nose radius. Chain: 91 Low ProfileTM 3/8 in. (9.5mm) pitch, .050 in. (1.3mm) gauge. Sharpen only with PowerSharp sharpener. Recommended saw sizes: 2.3 cu. in. (42 cc) and smaller gas saws Available lengths: 14″, 16″, 18″ (36, 41, 46 cm) Bar-mount sharpener is small, lightweight, and portable. Clamps easily to bar tip. Bar has alignment and latch pin holes, required for use with Power Sharp bar-mount sharpener. Small-radius bar nose helps reduce kickback energies. Slim symmetrical contour of bar is lightweight, manoeuvrable, and reversible for long life.