This is the smallest straight-blade lame in the world! Made of American Black Walnut, the design features no knobs, beautiful aesthetics, no plastics, simple. Keep your thumb on the blade as you score your bread dough, and be sure to tuck the blade away when finished. The wood is not treated with any chemicals, so maintain the wood by occasionally soaking it in oil. The lame comes pre-treated in oil and there will be some seepage onto the paper wrap and envelope. One Astra Platinum coated double edge razor blade is included. Please be careful when handling.