Older Style Blade Kit New Idea & More Disc Mowers with 18.5mm Bolt Hole SKU: BK02

Dull or damaged disc mower blades turn haymaking into a frustrating struggle with ragged cuts, poor forage quality, and excessive power consumption. This complete 20-piece blade set with 10 left-hand and 10 right-hand blades restores the sharp, precise cutting performance your disc mower needs for clean stem cuts and healthy forage.

Key Benefits

• Complete balanced set ensures consistent cutting performance across the full width
• Smaller 18.5mm bolt hole diameter fits specific models requiring this configuration
• Left and right rotation blades provide proper cutting action and debris flow
• Quality materials resist impact damage from stones and debris
• Fits New Idea 5209 S/N 9,756 - 16,012
• Fits New Idea 5212 S/N 9,756 - 16,012
• 5406: Fits S/N 1,001,159 through 1,007,480.
• 5407: Fits S/N 1,001,159 through 1,007,480.
• 5408: Fits S/N 1,001,159 through 1,007,480.
• 5409: Fits S/N 1,001,159 through 1,007,480.
• 5410: Fits all models built prior to S/N 1,007,480

Replacing all blades at once gives you consistent cutting performance and eliminates the wear patterns that develop when mixing new and worn blades. For questions about fit or installation, S&H Parts has been helping farmers maintain their haymaking equipment since 1969.