Drop forged body and handles. Quality blade made of Premium Titanium steel with Ultra-fine Polishing Technology. Ergonomically designed non-slip handles are strong,lightweight,and comfortable. Sap groove design to help keep pruning shears from sticking by channeling off sap. Pruners can cut up to 3/4" diameter size tree branches.This may vary depending on tree species. For protecting the blade out of rust, we coated some Antirust Oil at blade. So it is nomal when you receive the product that have some oil at the blade.