STIHL RAPID™ Super is an extremely fast-cutting chain. Its cutter and tie strap design reduces vibration levels significantly while still utilizing the aggressive full-chisel design. The razor-edged, square-cornered cutter shape ensures minimum chain friction for an exceptionally smooth and clean cut in hard or frozen wood. It offers excellent cutting and plunge-cutting efficiency. RS chain typically cuts faster than RM chain, but requires careful sharpening and maintenance to continue to perform well. Applications: Best suited for higher-powered chainsaws, the RS chain is ideal for forestry and industry, including felling, bucking and limbing. These aggressive cutting chains are designed for trained professional cutters with extraordinary cutting needs. STIHL recommends using low-kickback, green-labeled chain and green-labeled reduced-kickback bars on all powerheads. This chain typically comes in 16, 18 and 20 inch lengths, and would fit Stihl saws such as 026, MS261, MS 290, MS 271, MS 291Unsure which type of saw chain you need? Download our Saw Chain Selection & Identification Chart for easy reference when replacing your STIHL saw chain. Contact us for specifics before purchase.