Upgrade your Kity planer thicknesser with Sheartak spiral cutterhead at the most competitive prices. Shearcut Spiral Cutterhead for Kitty planers and jointers by Sheartak Tools. ... Spiral Cutterhead for Kity 635 Planer Thicknesser. CAD$670.00 Add to Cart. Spiral Cutterhead for Kity Woodster Junior 3K Planer Thicknesser. CAD$670.00