Three-opening disc brake adjustment wrench - 4mm thickened stainless steel disc adjustment tool - 15/18/42mm disc rubbing repair wrench - with matching 8 disc brake fine-tuning shims - Mountain bike and road bike brake repair kit

Constructed from a single piece of 4mm thickened stainless steel, preventing bending during correction. The entire disc is cut and shaped from a 4mm thickened stainless steel sheet, offering high hardness and torsional resistance, preventing bending and deformation during disc correction. The brushed surface is rust-resistant, resisting rust even in oily or rainy environments, extending its lifespan. The 189mm total length includes a non-slip rubber grip for comfortable and effortless hand operation. Three-position adjustment for different disc types. The disc surface features laser-engraved 15mm micro-adjustment groove, 18mm medium adjustment groove, and 42mm force adjustment groove, differentiating between minor disc rubbing, moderate deformation, and significant bending. Precise force application ensures accurate disc correction, preventing permanent damage from excessive force and allowing even beginners to operate accurately. Hanging holes are provided for easy storage. 8 Matching Adjustment Shims for Precise Brake Pad Clearance Adjustment The kit includes 4 curved disc brake shims and 4 oval adjustment shims. These are placed between the brake caliper and frame during maintenance to precisely adjust the brake pad and disc clearance, eliminating disc wear noise and resolving issues like uneven brake wear or one-sided disc rubbing. The shims are thin, have moderate hardness, and are not easily deformed. Universal for All Bike Models, Essential Tool for Riding and Maintenance Compatible with all hydraulic/mechanical disc brake systems on mountain bikes, road bikes, folding bikes, and city commuter bikes. Resolves disc bending and rubbing issues caused by riding bumps and falls. Perfect for bike assembly, routine maintenance, and long-distance touring – one kit…