Chainsaw crankshaft circlip: Designed for precise fit, compatible with Stihl 017 018 MS170 MS171 MS180 MS181, locks into the crank end groove to keep bearings and spacers securely positioned under vibration. OEM reference: Matches OEM 9468 621 1520 and 94686211520 for clear identification, compatible with Stihl platforms using this circlip size to streamline maintenance, stocking, and part selection. Spring steel construction: Tempered spring steel with black finish, size 7.5 x 9.5 x 0.6 mm, maintains consistent tension in the crankshaft groove without bulk, aiding smooth rotation and consistent performance. Repair and replacement use: Retains gears, bearings, or washers on the crank end, limits axial movement, supports quick installation using snap ring pliers during routine chainsaw service, tune ups, and rebuilds. Application scenes: Ideal for home workshop repairs, yard and forestry crews, equipment fleets, and small engine shops, keeping saws ready for cutting, pruning, trimming, and light felling tasks., Manufacturer: YINETTECH