General description The AlwaysH 4pcs Coil Caps are designed as strong and durable spare parts for various trimmer models. Made from high-quality ABS and carbon steel, these coil caps offer excellent stability, impact resistance, cold resistance, and oil resistance. The unique design ensures that the edges last longer on rough surfaces while aerodynamics help reduce pipe noise and jerking. Technical specifications Material: ABS + carbon steel Coil cover size: 8.6 x 3.4 cm / 3.39 x 1.34 inches Spring size: 2.3 x 3.6 cm / 0.906 x 1.42 inches Quantity: 4 pieces Compatibility and accessories Compatible with BLACK+DECKER AFS GH400, GH500, GH600, CST1000, CST2000, NST2018, ST7000, ST6600, and ST7700 trimmer models Package includes: 4 coil caps and 4 springs Installation Easy to install, simply place the cover on the valve insert to secure the spring Usage Ideal for patios, lawns, yards, gardens, crops, and landscaping Suitable for agriculture, animal husbandry, aquaculture, and forestry