Aerator Core Tines — Fits RYAN 522361, EXMARK 121-4894, BLUEBIRD 424/530A 12 — 12-Piece Set

Direct-fit replacement tines for RYAN 522361, EXMARK 121-4894 and BLUEBIRD 424/530A 12. Slotted interfaces eliminate the need for adapters and deliver a zero-play connection for reliable operation. Constructed around a boron-alloy steel core hardened to 55-60HRC through triple-stage tempering, each tine is finished with a micro-crack coating to reduce soil buildup. The 15° helical blade angle protects turf while dual-tapered tips are engineered to achieve 8-10cm penetration in clay and gravel soils. A one-way snap-lock system enables tool-free, 10-second swaps and anti-misalignment slots cut maintenance time by 50%. This 12-piece set provides full aerator coverage, and integrated mud channels help prevent debris entanglement for continuous performance.