【FIT FOR CRAFTSMAN TRIMMER】"YWTESCH" brand 4 pack weed eater string replacement spool cover compatible with craftsman cordless trimmers models: CMCST900, CMCST900B, CMCST900D1, CMESTA900, CMESTE920, CMZST98020, CMEST913, CMCST915. Used in conjunction with trimmer line for craftsman weed eater. Replacement Cap Model:CMZST120SC. 【MORE DURABLE】Made of PA6(Nylon) & 30% GF (Glass Fiber). Nylon is reinforced with glass fibre, which greatly enhances the hardness of the cap and provides greater abrasion and heat resistance, enabling it to withstand the high speeds of the weed wacker, very durable, and effectively prolonging the life of the cap. Therefore, compared with ABS plastic, it is more suitable for the production of weed eater parts that require high strength 【IMPORTANT ROLE】The CMZST120SC string trimmer spool cap is 100% compatible with the applicable string trimmers models, rigorous non-slip design ensures that the cap will never fall off, protects the line and holds the spool in place. Prevents weeds involved and damage to the trimmer 【CAP SIZE】The diameter of the cap is 3.36 inches and the height is 1.28 inches.Included: 4 pack replacement spool cap covers. 【RELIABLE AFTER-SALES SERVICE】We are a professional weed wacker string spool & cap supplier, so we have more reliable after-sales service. If the spools and cover caps are not suitable for your trimmer model, or you accidentally buy the wrong one, you can contact us at any time, we will provide you with a satisfactory solution within 24 hours, and we attach great importance to every customer's experience 4 Pack (CMZST120SC) String Trimmer Replacement Spool Cap Compatible with Craftsman, Weed Wacker String Parts Trimmer Line Cap Covers Compatible with Craftsman Cordless Weed Eater