Compatible with Black Decker: Compatible with most mower models: GL280, GL301, GL425, GL430, GL545, GL555, GLC13, GLC2500, GLC2500L, GLC3000, GL4525, GL.4525S.B, GL5028SB, GLC1423 L, GLC18 25L, GLC362 5L, STC1820, STC1815, ST4525, ST5530, STC1820PC, EPC, STC1840, EPC, ST1823, etc. Premium cutting cord: 9.15 m cutting cord for greater cutting range, 1.65mm diameter, durable and flexible polyamide nylon cord. Not easy to break, ensuring continuous work. Quick and clean cuts: The automatic feeding system for changing coils relieves the tedious work of manually winding the coils. It uses centrifugal force and aerodynamics to reduce drag and perform a fast, clean cut. PERFECT REPLACEMENT SPOILS: These are perfect replacements for most Black & Original Decker such as A6481, A6485, AF-100, AF-100-3ZP, AF-100-BKP, AF-100-2. The coil can be plugged and unplugged without tools, and the operation is simple. At the same time, damage to equipment is avoided and wire usage is optimized. Value set: Set includes 6 spare spools, 12 spare caps and 2 spare springs. replacement. Coil caps replace RC-100-P caps, springs replace RC-100-P springs. Excellent value for money.