Andis Drive Assembly Lever Replacement Blade for Pet Clipper, This blade drive assembly lever is the clear plastic frame with a black lever that moves the blade back and forth. It should be replaced when blades are no longer cutting sharply. Fits all compatible Andis clippers AG, AGC, AGRC, AGR+, AGCL. Measures 3-1/2-inch length by 2-1/2-inch width by 1/2-inch height.