WELL DESIGN AND ENGERREED 1.96 inch Rim/wheel designs. the printed object is very hard and durable. this designs are print friendly . just use the STLs and convert to G code. no need to reprepare and edit the files. layer thickness 0.1-0.2 mmrecommended to use 100% infill you can use 1.9 inch tires for this rims.