GearRackFactory Product characteristics of round gear rack 1: The round gear rack is easy to install. 2: The round gear rack design allows for more accurate and smooth reciprocating motion of the rack. 3: You can arbitrarily specify the required length, which can be specified in units of 1mm, and the specified range is from 50mm to 500mm. ProductRound gear rack Teeth typestraight teeth Pressure angle20 degree ModuleM1 M1.5 M2 M2.5 M3 M4 Length1000mm, 2000mm or custom length PrecisionDIN6 DIN7 DIN8 DIN10 Except round gear rack, we also produce spur gear rack, helical gear rack, sliding gate gear rack etc, we have standard size in stock, also can produce custom gear rack based on drawings. Before shipping, we will package the gear rack carefully to prevent damage during the transpotation, if small quantity, we will package it with carton box; if large quantity, we will package it with wooden box.GearRackFactory website:http://www.tjondgear.com/gear-rack/