Rotary Cutting Blade for RT18, RT26 RT37S, RT51S $29.00 Rotary Cutting Blade for RT18, RT26 RT37S, RT51S quantity Add to cart Category: Replacement Parts Description Description Replacement cutting blade and housing for RT18, RT26, RT37S, & RT51S. Also Available at Office Depot Also Available at Staples Related products T15 – Paper Guide for T15 Trimmer $14.00 Add to cart T18P – Paper Guide for T18P Trimmer $14.00 Add to cart RT37S – Plastic Clear Paper Clamp for RT37S $23.00 Add to cart C12 – Cutting Sticks for C12 $86.00 Add to cart