8" x 18" Power Trowel Combination Blade Gold with bar mount is 50% thicker and will last 25-50% longer with fewer blade changes. Made to precise specifications for extended life and best performance with fewer blade changes. The 8" x 18" Power Trowel Combination Blade Gold (4 Pack) fits 46"-48" Allen, Bartell, Stone, Stow, Whiteman, Wacker and other popular styles of power trowelers. Sold in pack of 4.