Hoof Trimming Specialties Block Adhesive is a fast-setting urethane adhesive used when blocking the hooves of lame cattle. Hoof Trimming Specialties Block Adhesive can be used with either a wood or rubber/plastic block. Fast and easy to apply. Sets up in just 30 seconds and is weight bearing in 2-3 minutes. Use in well ventilated area. Requires dispensing gun, mixing tips, and hoof blocks (each sold separately)