Yaemart Corporation 3 Multipurpose Mini Bench Grinder Polisher with 31 Long Flexible Shaft and Accessories, Variable Speed Dial 0-10000. 0. Sold by iShopDirect. $130.01 $110.18. Nov 16, 2021 For the top bench grinder models on the market, have a look at our below list which includes an array of the best-performing bench grinders with 6-inch and 8-inch wheels (and even a mini 3-inch version), and many perks like variable speed, rubber feet for stability, adjustable tool rests, eye shields, and adjustable work lights.