i just follow your lead, since me is a noob   is this the 1ZPresso with 7 blade bur? https://www.amazon.sg/1Zpresso-Grinder-Stainless-Numerical-Adjustable/dp/B0CXCYXL91   how come the link got 2 option? the 138 got handle while 152 dont have $152 (Stainless Steel)  and $138 (Aluminium)     grind black pepper, me use noki one, 1 hand to grind pepper, btw is the Timemore C2 air tight?