Serial production is carried out with Certified Aluminum raw material in precision CNC machines. Aluminum is a more expensive product than steel. but it has great advantages. Does not tire your engine, does not wear out and does not rust. We have been an inspiration to many manufacturers for years, and we have been copied. We pride ourselves on producing the highest quality products. TR Maker Belt Grinder 2×72 small wheel set & holder for knife grinders Narrow and corner areas are the ideal solution for recovering and knife grips It is always better to use less sand sandpaper Product contains 5 most commonly used cylindercylinder holders are aluminum.First class rubber is covered with special methods.provides flexibility in use. extends the life of the sanding strip.these are definitely the most appropriateDo not use over 2000 cycles for long-lasting use.cylinder diameters 18 mm22 mm25 mm30 mm35 mm